-Is it intentional that there is no wording preventing a male character from selecting the Adeptus Sororitas background? Or could it be considered like the AAT, where a non-psyker character is considered to instead be a handler type? If that is the case, then should there not be a gender requirement on the Sister of Battle elite advance?
-How do talents interact with a Sororitas "gaining" corruption points? Obviously in the absence of anything they just get that many IP, minus 1, but what about other talents? For example if the character has a talent that reduces the amount of CP they gain by 1, does this affect the total IP a Sororitas would be gaining? What if they also had a talent that reduces IP gains by 1? Would a Sororitas have a net IP gain of that many CP - 3? Seems rather effective. The wording on the Sororitas ability says "gain 1 or more Corruption points," so it would seem the rules interacting with CP gain would kick in to reduce that, but then it still goes on to say they "gains that many Insanity points," thus also triggering the IP related reduction effects.
-Can Sororitas become Psykers? Seems entirely possible (and I would say preferable that its at least an option for all those wacky character concepts), but given the above, seems like there are several tools at their disposal to mitigate anything bad. Consider too if they take the new Tainted Psyker talent combined with the possibilities of the above rules interpretations. The Sororitas Psyker could willfully take 3 CP points each time they manifest, get a +30 bonus on the test, and still suffer no ill effects. Now sure, this is a partciularly able character, having picked several talents with pretty high pre-reqs, and its definitely an awkward combination of RP conditions, but still, a -constant- +30 bonus to all manifest power attempts!
-Cleanse With Fire: can it keep triggering re-rolls or is it just one re-roll?
-Penitent's Cleansing Pain: Can they use this bonus on extended tests (e.g. flagellents hurting themsevles before studying in a library)
-The Snapper Repeating rifle seems exceptionally heavy for a "basic" weapon
-Cerberus Heavy Flamer: Do you realize what you've unleashed by having a spray/flame weapon with semi-automatic fire?! It can now fire under Surpressing Fire, cause Pinning, and make it remarkably more difficult to put the fire out (they have to break pinning, all the while also having to test to not take any actions that turn). Also of note is this might be the first time a Spray weapon does have semi auto - how does this interact with Surpressing Fire? 30 degree cone and still hit everything?