I consider Power Armour to be something that shouldn’t happen (except of course through the Commodore shop because gotta sell what you gotta sell)
Having them “start” as Noviciate instead of having each personality be from a different rank then after ward being thrown to the Penal system is more flexible for the VA, as you can have the different voice actors show more of the Sister Orders than just the newbies.
I did make a thread with some think like that previously Archetype Concept: Sister (Act of Faith Heavy)
Basically the Faith would work as an inverse Peril, where it would decrease through damage taken and replenish through kills and coherency (like Toughness) but could be spent on the Blitz and/or specific weapons special