Artillery tanks are described as rare in betrayal (and a 0-1) for 40k although at epic scale i had been thinking about this. They could be 0-1 per core detachment, but i am not sure that is very clean. An army of just terminators and basilisks would be busted ;-)

Something that came up in discussion was the effects of removing And They Shall Know No Fear. In part this is balanced by some larger formation sizes (such as the Legion Tactical formation), but some will be badly affected – in particular the four-strong formations such as Terminators, Predators, Dreadnoughts, Assault marines, Land Raiders etc.; where taking one casualty will leave only one to fire back. I think this will create a really weird dynamic where you end up with lots of pretty-much intact formations lurking around instead of acting like Marines.

In Betrayal, And They Shall Know No Fear has been removed, but is replaced with the note that the formations can always regroup regardless of casualties, plus larger unit sizes.

Perhaps the four-strong formations could be boosted to six? Alternatively, you could include a modified version of the And They Shall Know No Fear rule that includes the two blast markers to be suppressed and to kill units when broken clauses but removes the rest? e.g.

1.0.1 AND THEY SHALL KNOW BETRAYAL
Despite being shaken by fighting their brothers-in-arms, Space Marines are renowned for their tenacity and bravery. This is represented by the following rule:
• It takes 2 Blast markers to suppress a Space Marine unit or kill a unit in a broken formation (ignore any leftover Blast markers).

_________________
Industrious, red-robe wearing member of the PCRC

If it proves to be a problem, I'd prefer to have something simpler such as +1 to rally and regroup checks. However the generally huger sized formations, should not see them breaking oh so easily, and it should mean that armoured units should be used more tactfully. There is also an upside to reducing the output of the fire capacity of incoming armour columns as a balancing mechanism- generally, in scenario play when the missions are done, the loyalists side will have either little, less or no tanks compared to the traitor side (if the players choose to select forces as reccomended; but don't have to) and will be bunkered up on overwatch or sustained fire, trying to suppress or destroy the traitors as they attempt to overrun the loyalist positions. Don't forget that they also get free rhinos adding to the size of troop formations, and that land raiders don't ever die, and There are very few disrupt weapons. The formations are pretty similar in scope to those of the Black Legion, and they manage to get by without ATSKNF ok- it just means that they are a different play style to the more elite 40k era marines, and if you have played the chaos list, it is not necessarily a bad thing.

(also dreadnought and terminators can currently be taken in sixes, you can add land raiders to terminators, assault marines can be taken in in 8's, you can add a hyperios whirlwind to a predator or land raider detachment to up numbers- but a detachment of six land raiders is a bit way too tough an opponent!)
EDIT: land raider comment rescinded, willing to try it if the black legion list thinks 8 are playable!

Update 5)
Army list v0.3 uploaded to OP

Changes:
-Primarch added to several detachments
-Fixed typos
-Amendeed spacecraft transport values
-Removed ThunderHawk Transporters
-Added Legion Storm Bird Heavy Gunships
-Added Warlord Titan
-Changed Land Raider, Predator and Contemptor Dreadnought detachments to 4-6 models
-Adjusted point cost of Land Raider, Predator and Contemptor Dreadnought units to suit x-y point listing

Looks good, I'll try it for my next game.

How does this list looks? It's supposed to be a Luna Wolves Speartip assault, lead by Horus in person.

Terminator Detachment, 6x terminators, 6x LR Phobos, Primarch [990]
Terminator Detachment, 4x terminators [260]
Tactical Detachment, Hyperios [310]
Tactical Detachment [250]
Assault Detachment, 4x assault marines [160]
Dreadnought Talon, 4x Dreadnought (PF+Plasma) [240]
Land Speeder squadron, MM [175]
Land Speeder squadron, Graviton [175]
Artillery Tanks, 3x Whirlwind + Hyperios [260]
Thunderhawk gunship [175]

A few thoughts:
- It's nice to see the Stormbird, the stats looks very good. Now, to modeling!
- If you're including the "antique" tanks here, how about replacing the Basilisk with a Minotaur?
- It's nice to see a list with both LR Phobos and LR Proteus; It does seem a shame that the Land Raider Battle Squadron can't take Proteuses, though. From a modeling perspective, they are very easy to acquire in bulk, and they would look good in large formations.

Cheers! From a modeling perspective, you should feel free to use proteus as phobos rules wise, but you will notice proteus have scout and Augury web- rule wise a table full of them will be a nightmare. You could just model an aerial on the ones you use as proteus, rules wise.

I have built the list upon options present in the isstvan iii forgeworld book (plus a sneaky stormbird), no minotaur was mentioned for legion marines in there (and basilisk models are readily available too)

OK, game completed, battle report here.

I changed my mind on the list, and swapped the teleporting terminators, the dreadnoughts and the whirlwinds for upgraded tacticals (with heavy weapons and vindicators) and a Warhound.

Some thoughts:
- The large Tactical/Heavy Weapons detachments are brutal as support units. Easy to get into position, and lays down some very impressive fire.
- The Primarch whiffed the two attacks he got to make, but he still strikes me as a bit on the cheap side.
- Massed Astartes looks good on the tabletop
- With the large formations I took, I didn't particularly miss ATSKNF.
- I intentionally avoided Librarians and Chaplains; Surely, they don't appear until a bit later in the rebellion?
- The Champion seems a bit lackluster for 50 points, and I rarely have need for a Commander. So, I stuck with the Primarch as my only character, everyone else is generic genetically modified supersoldiers...

Great! thanks. I will digest your battle report this afternoon.

Will the heavy support squads get their own option as a support detachment (like the assault squads), or is it a conscious decision to keep them as a legion upgrade only?

As a concious decision they are left as an upgrade to legions, stops them being used as remote aa bubbles, as tactical detachment supports they function a bit fluffier as in general, legions generally go to war in large detachments of tactical units with a few support attached. You would not see larger than four stands of heavy support marines operating together due to their relative rarity, a detachment of only four heavy support marines is going to break pretty easy, and the devastator/assault marine thunderhawk drop is not really something i wanna see in a legion list.

Ah ok makes perfect sense, thanks for that!

No worries. I got my own first playtest game in last weekend! A bloody affair, with both forces including four large tactical detachments and tanks, while the opponent took a reaver, i took a fellblade detachment. All went well, and whilst trialling malcqdor assault tanks and wishing hey had another 5cm speed, i remembered reading about how the 30k era malcador's have overcharged engines as opposed to the 40k versions which are slow and lumbering ;-) so i shall bring them up to speed 20. Other things i need to fix, i forgot to add armour save for the avenger fighter, And some typos. I will release another update after some more playtesting.

Emperor of Mankind
type: CH
speed: 15cm
armour: 3+
CC: 2+
FF: 3+

Weapons:
D6×Psychic power: 60cm BP10 disrupt, ignore cover, TK (D6+3) different targets
Ancient Sword: base contact assault weapon first strike, extra attack (D6+2) TK(1)
Bolter: 15cm small arms extra attack (2)

Notes:
DC3, reinforced armour, thick rear armour, invulnerable save (2+), supreme commander, inspiring, unbreakable

Cost: 5.000 points :-D

_________________
Into the fires of battle, unto the anvil of war!

http://www.epichq.blog.hu

Horus must be 5,001 points :p

Mate,

Cal and I are very interested in playing some 30K games so I'm in the early stages of building an army.

I've noticed the support and hvy support squads seem a little light on for firepower in the translation from 40k to Epic. Is this intentional or should they have a better FF in the case of the tactical support squad and perhaps more ML shots for the heavy support?

The HH book has every marine carrying a special or heavy weapon so they are actually quite a bit more dangerous than their "modern" tac and dev equivalents.

Just a thought.