The way I have Blazblue setup, I use the square button as my drive, with triangle being the weak attack, circle being the medium, and x being the strong.
Come to think of it, moving to that might be a pretty good idea, since it's similar enough to a stick. This way when I get presented with a stick, it won't be as jarring an experience. Come to think of it, I don't really see myself liking a stick all too much. I got a big pencil here I can just turn upside down and the motion feels really unnatural, doesn't seem to flow as well.
Did you move to a stick because you hated pads, or because you liked sticks more?