I like push.... jump seems most of the time like an exploit... oh? I am in a fire surface, better jump out instead of run, ooh there is a tank between me and their wizard? I can jump out and avoid the tank ezplz. I will tone down hard the jump ability to all classes.
Don't forget jump/push works both ways. If you can do it they can do it. I had a clacker push my fighter over a cliff and insta kill her. But I have insta killed bosses the same way. So swings and roundabouts I guess