Ya know, I've been thinking that this list could almost be worked into the basis for a new Epic version - Epic: Crusades. Other races mentioned in the Horus Heresy books could then be designed and made. Each Legion could still fight each other as the stories unfolded etc.

heres part 1 of a ( very brief) rundown of the full crusade list

legion praetor ( equivilant of chapter master , can take rites of war which change how army functions , armoured spearhead , orbital assault, angels wrath or pride of the legion )
legion centurion ( a catch all hq choice , 50 pts basic , but can be upgraded to one of NINE different specialisations . chaplain , master of signals , legion champion , vigilator , librarian , forge lord , primus medicae , siege breaker or moritat )
legion command squad ( pretty much same , 3 man strong with able to add 2 more)

veteran tactical squad ( ten strong only , can add one of a list: fearless , sniper , furious charge, outflank or tank hunters )
legion destroyer squad (uses proscribed weapons , Rad missiles , phosphex bombs )
legion terminator squad ( can count as scoring units)
techmarine covenant (1-3 techmarines as a single elite choice, each can have 4 servitors with them )
apothecarion detatchment ( 1-3 apothecaries ,each MUST be attatched to a squad)
legion dreadnought talon (1-3 dreads )
contemptor dreadnought talon (1-3 contemptors )
legion rapier battery ( 1-3 rapier destroyers , can be upgraded to thudd gun or graviton cannon)

legion tactical squad ( 10-20 marines , fury of the legion special rule )
legion assault squad ( yes , troops choice lol , 10-20 marines , 1 in every 5 marines can take power wep orhand flamer / plasma pistol )
legion siege breaker squad ( 10-20 marines , boarding shields , 1 in every 5 can take a special wep , graviton gun , lascutter etc, all have void hardened armour )
legion tactical support squad (5-10 marines , all marines except sergeant , yes all 9, have flamers , can be upgraded a different special wep. squad cant be used to fill compulsory troops choices )
legion recon squad ( 5-10 marines in power armour , scout , outflank and acute senses , may have sniper rifles . can remove power armour for scout armour and gain move through cover and infiltrate )
rhino ( as before but can take pintle mounted h. bolter , h. flamer or havoc launcher )
drop pod ( unchanged )


thats hq , elites and troops , ill do fast attack , heavy support and ' gods of war , in a bit

Okay , fast attack , heavy support and gods of war

legion seeker squad ( headhunters , designed to take out enemy command elements , 5-10 strong , special issue ammo ' marked for death' special rule , gain preffered enemy against one enemy unit or independant character )
legion outrider squad ( 3-10 bike squad , scout special rule , all bikes have twin linked bolters.. ALL marines can swap these out for twin linked flamers , melta guns or plasma guns, 1 in 3 can have power weapon , hand flamer or plasma pistol )
legion attack bike squadron (1-5 strong h. bolter can be swapped out for h. flamer, autocannon or multi-melta )
legion jetbike sky-hunter squadron (3-10 strong , 1 in 3 can replace jetbike mounted h.bolter with multi-melta , volkite cannon or plasma cannon , deep strike special rule )
legion land speeder squadron (1-5 strong , and speeder may replace h. bolter with h. flamer or multi-melta . any speeder can add a havoc launcher , h. bolter , PLASMA CANNON! or graviton gun in addition. any speeder can also take upto 2 H.K.M's )
legion storm eagle gunship ( as before )

legion heavy support squad (5-10 strong all marines in squad ( including sergeant! have a h. bolter . all may swap out for a different weapon , but MUST all take the same kind of weapon . H. flamer , autocannon , missile launcher ( may be upgraded to carry flakk) multi-melta , plasma cannon , volkite culverin or lascannon. entire squad may have hardened armour )
legion predator strike squadron ( 1-3 predators , includes all the forgeworld options EXCEPT twinlinked lascannon. predator turret autocannon is now heavy 4)
legion land raider battle squadron ( 1-3 landraiders any of which may be phobos or proteus , but only one of which may be an achilles )
0-1 legion artillery tank squadron ( 1-3 of a whirlwind , basilisk or medusa. ww may be upgraded to anti-air )
legion vindicator ( as before , but can take pintle mounted h.bolter / h. flamer or havoc launcher )
legion spartan assault tank (25 troop carry capacity , quad lascannons may be swapped for rapier destroyers , may take frag launchers. assault vehicle , 5 hull points )
legion caestus assault ram ( largely unchanged )

gods of war
legion fellblade super heavy tank (turret mounted twin ' accelerator cannon' high explosive round - 100" range , strength 8 ap 3 ord 1 , 7" blast , primary weapon
armour piercing shell - 100" range ,heavy 1, strength 9 ap 2, armourbane ,3" blast

legion typhon heavy siege tank ( basically a ****** huge vindicator , no transport capacity. dreadhammer siege cannon. 24" if moving , 48" if stationary, strength 10 ap 1, ord 1 , 7" blast no cover saves . has crushing weight special rule . auto passes difficult or dangerous terrain tests for rubble ,barricades , walls , ruined buildings or wreckage.
auto inflicts strength 10 ap 2 ram damage NO MATTER HOW FAR IT HAS MOVED ! )

legion thunderhawk gunship ( largely unchanged)

legion thunderhawk transporter ( largely unchanged )

legion cerberus heavy tank destroyer (super heavy land raider , twin linked neutron destroyer laser battery)
legion malcador assault tank ( largley unchanged , may only take battlecannon and twin linked lascannon turrets )

bear in mind this is the briefest glimpse , not counting all the different weapon options , new weapons , legion specific squads and mechanicus units