Yeah, if you buy a new stick, maybe it should be a break stick :shocked:
I get what you're saying, to me it sounds like you don't trust your stick. I would definitely be jittery trying to use one that had a little crack in it, even if it seemed to hit ok. That can get in your head.
So if you don't trust your stick, it's time to get a new one. But forget the whole "style" thing. It's overthinking things and it can actually hold your game back. If you stick to one shaft for a long time you develop great touch with it. But if you keep switching you lose that touch and gotta learn it all over again.
You really don't need to change taper or diameter or tip hardness etc., not unless those things are really bugging you and causing you to miss. I owned a Z2 fat shaft for a while and there's no advantage to it. You don't get better spin, or worse spin, or less miscues, or more miscues. About all it does is affect feel and IMO make it a little harder to see where you're hitting the cue ball.
For miscues especially, it's 99% user error even though people like to think it's the tip or the chalk or 13mm vs 11mm or nickel radius vs dime radius. People don't want to admit they just tried to do too much with the cue ball and paid the price. If you get the fat shaft but don't change anything about your game... trust me, you'll miscue or accidentally spin balls just as much.