Hi Straiker,
Nice work. I do believe that the original Warhammer 40k did follow on from Warhammer Fantasy... But anyway back on point.
At the moment it feels mainly like a port.
Slann currently costs too much for what he does, so add some special rules! Currently I can get +1 Mastery Level, a Force Weapon, Psychic Defence and Casting Re-Rolls at the cost of -1 Wound and 15 more points...
Another example would be the two different profiles for steed and rider, instead the rider typically gains +1 Toughness (however angry dinosaurs should give you more than just +1T). This doesn't exist in 40k. And so on...
However I like how you've handled other aspects like Standards and Musicians as they're fitting rules which work. And I really liked reading the Relics section. (Brought back old memories)
A few typos also are here and there. For example the Spear & Great Weapon profiles are clearly wrong (not sure what they should say).
Anyway as an early draft it's solid, so keep it up!
Sam