At the risk of sounding stodgy and condescending...pick literally any blade you want, and practice with it. Since you're used to the p28, and it checks almost all, if not all, of your requirements, stick with that and make it do what you want. If you change curves, that alone might improve some aspect of your game, but other aspects will suffer.
From your descriptions, it sounds like you just need to go to stick time and practice wrist shots and passing accuracy.