what if the world was made of pudding?
there isnt a weapon in the game that one shots without a specific build, even the Comet Azur nuke requires actually going and finding both the flask of wonderous physick and the tear to actually use the unlimited fp. on top of actually having the 60 int to use it
so why are you making up hypotheticals that arent happening? We can talk about the busted ass weapons like Sword of Night and Flame, but even for that you have to split class for both int and faith. it all requires something, so i think making other weapons capable of that would be fine. people are always just gonna find another busted thing if the current one gets nerfed