Hello Mr. Bloom,
First I love the system and how creative you allow the flow to be, while making it challenging and potentially rewarding for players. Even having the abilities having some open-endedness to allow cross Blasphemies synergy.
This is more of a ruling question, is there mechanical/narrative benefit or importance to having a CAT on weapons, since using weapons on SINS are already considered Hard? Like would increasing CAT just make it so we can do more anime-like stuff in the higher level, like a CAT 4 exorcist with a CAT 3 sword can bisect a building with a Hard force roll? Or a CAT 2 exorcist with a CAT 1 pistol is able to snipe like it has a range of a rifle rather than a handgun?
I just to want to understand the benefit the characters would get from spending 60% of a successful, no death, mission payout on an upgrade like this.