Yes the rules set for 40k is over complicated , because the core rules just cover standard infantry.ALL other units have seperate or additional rules.(Which is what I meant to say.)
If the rules were written INCLUSIVLEY , eg ALL units used the SAME rules for movement, damage resolution etc.
The game play could be achvied in a more direct way.You know how most other rule sets are written...
(And other games seem to cope with far more variety than found in the game of 40k !)
And special abilities could be covered by, dice modifier, dice re-roll OR ignore ONE condition.
Sharp shooter, +1 to hit on units ranged weapons.
Frenzied , re roll 1s , on any roll to hit in assualt.
Amphibious, ignores penalties for water based terrain.
Rather than adding too or contradicting core game resolution/mechanics.