Is Strength Bonus included in the damage values presented on the pre-gen character melee weapons? Looking at the Heretek's luminen capacitors, it would seem not, however, looking at the amount of damage Chaos Marines would be doing if this was the case, seems insane. Asrodel would be doing 1d10+20? Babaroth would do 1d10+24 at pen 2. From looking at the NPC's, this annihilates pretty much anything, not to mention pretty much makes all human heretics obsolete in combat.
I have to imagine that SB damage is included, but then why not for the Heretek?
Second, is there more of a reason to play roles such as Renegade or Psyker? It seems that all of the CSM archetypes are just much much better. They have maybe one or two less skills, but that's the only downside I can see. Though there are a few moments in the adventure where a CSM has a little bit more trouble "fitting", I'm having a difficult time coming up with a valid reason for my players to choose humans careers.
My players are going to look at weapons, armour, stats, abilities, and skills, and undoubtedly ask me what the benefit of being a human is. What do I tell them?