All I know, is that this would be a nightmare for Samurai. The way I have my abilities on my hotbar are from left to right to flow with the combo (i assume most people do this). Not only does it make sense, but it allows me look down and know WHERE i am in my combo for those moments in fights where I have to focus on a mechanic or something.

consolidating this crap would basically mean relearning this entire job, especially factoring in Hagakure and Meikyo.