Re: Lightnings being awesome fighters: none of it is going to matter if they cant take a single hit

Remember that armor isnt always armor plates, but agility and quickness and other factors as well. Im pretty sure you've said something like this in more than one development thread before yourself.
OK, anyway, while we're on making lists representing fluff:
The Witch Hunters codex gives access to Land Raiders. I know your list doesnt deal with Inquisitor Lords much, but would a "Cardinal" count as one? Fluff-wise I dont know. Im just thinking of allowing 0-1 Land Raider per Inq. Lord taken, and am making the assumption that a Cardinal might be one? If I'm wrong Im not surprised.
In making my list for tomorrow, I spent some time contemplating the difference between Repentia and Arco-Flagellants.
Basically:
250 for 6 Repentia which get a free character for an extra attack gives 6x 4+ MWCC attacks and 1x 4+ CC attack.
300 for 6 A-F units who get 6x 2+ CC attacks, and an Invulnerable save
Both have 5+ armor, both Fearless and both Infiltrator. I cant do math, but it seems against Marines (which is almost all I play against) the Repentia are a no brainer. They should kill 3 units per combat outright, and this doesnt factor in the Mistress' attack. The A-F will hit more (5 times) but kill 2.5 units because of their armor save. Armored units will get their RA rerolls versus A-F but not against the Repentia. And in a list that is sorely lacking in ranged AT firepower, getting up close and personal seems the best way to accomplish this.
In 40K, A-F cost almost twice what Repentia cost (35 instead of 20 per) and can deal an insane amount of armor-save-negating Power Attacks. 6 A-F (max unit size, 210 pts) can get an average of 24 Power Weapon attacks on a charge, while 9 Repentia and their Mistress (mid-sized unit, also 210 pts) can get 22 with the Mistress, although hers arent Power Weapons. However, the A-F can get much less, or MUCH MUCH more than this number, so they are a gamble.
I know why Repentia get MW and A-F dont. I guess I feel the A-F are getting the shaft here, even though, on paper, they have similar look. Maybe against lightly-armored foes, the A-F would be better, but as it stands, I wouldnt take A-F. This is a shame. In 40K, I NEVER took Repentia and ALWAYS took Flagellants. Oh well. Plus, Repentia can get a Priest and Transports, making them much more versatile.
Redemptionists are another semi-useless formation that could be so much cooler. in 40K, a maxed out unit of 20 can have 4 Eviserators (same weapon as the Repentia) plus a Priest who can have one too. How about allowing Redemptionists to take TWO Priest upgrades, neither of which can be a Cardinal? At least then you get 2 MWCC weapons in 10 units. You'd also get 2x Inspiring and Leader, so they'd be fearsome in melee and could shed BMs nicely. This makes sense, fluff-wise, as the first sentence of the paragraph called "Here Comes The Pain" (WD292, p83) says "Death holds no fear for these zealous followers..and it is rare for them to retreat from battle." Basically, theyre going to rally and move forward. Now they might be worth taking. And none of this takes into account their Exterminators, crazy massed one-shot weapons of insanely-fast Initiative death...
Two last things. Lack of AA is really making me consider taking the IG Infantry formation for their Hydras. If Sisters of Battle can add Exorcists to their formation, how come they cant add Hunters instead?
And lastly, Sentinels are the only
Scout option for the list. Is that normal for an army list?
Oops: One more thing. Currently, the Immolator is the only unit in the list with a ranged MW attack (Im not looking at Titans). That range is 15cm. The longest non-IG ranged weapon in the list is the Hunter at 60cm (one shot and can only be added to Exorcist formations), and then Exorcists at 45cm. There is no
Indirect unit. Are any of the forthcoming War Engines that are supposedly going to be reintroduced going to address this?
NOT COMPLAINING, just analyzing, btw...been really pouring over this list because of my upcoming games, and these are my thoughts. Really looking forward to taking them out, but I almost feel handicapped going into the battle...am I way off?