Blm does have a set rotation though, which you said you don't want.
Brd uses a priority system where you constantly check which skill is best to use (at least in 3.x it used to didn't try in 4.0 yet) it doesn't really use procs (except one I can think of real quick), but also brings a lot of party utility. I believe you should check that out.
Other than that, Nin springs to mind, no procs either though. But fast gameplay, mobility and mudras add some flair to it. Still, keep in mind I speak from a 3.x standpoint as apart from my Blm I didn't get to check either of those classes yet.