Plasma Weapons and Melta-Weapons are currently to weak: Therefore add a quality to all plasma/melta weapons Called Furnace: Super-heated plasma (essentially the stuff suns are made off) adds an extra 1d10 to the damage roll.
The Omnisian Chain Power Axe in the Inquisitors Hand book is vastly underpowed compared to other weapons, given the fluff describes it as a “weapon of unparalleled design” with no equal I would think it would do more. Therefore increase the damage from a pathetic 2D5+5 to a reasonable 2D10+5.
Concerning Corruption points: Originally, T.S. Luikart dished out Corruption Points in Purge the Unclean for acts of immorality. He later admitted that the Corruption rules hadn't been completely written at that time, and that this concept needs to be handled differently. Since we know that Corruption points can only come from Warp-tainted sources. Should therefore insanity tests handle acts of extreme evil?
These questions have been culled from other posters (except for the chain power axe that one is all mine). Sorry to the developers if these are in the errata already, but I didnt see them anywhere in there.