I find this just horrible, the knockback is very irritating. The limited skill also cause some problems, being impaled then instantly netted(forgot the real name of it, sorry), the hook is the real only decent ability and even then it's constantly needed for when the ball gets stuck in one of the many glitched or corner areas.
I suggest you make an ability or something thats needed to make the ball move, that way you dont auto attack the ball after you get knocked back 15 feet and end up hitting the ball in an unwanted direction.
Also I would check the hp gain on each team, I noticed that the zerg had an extra 175 hp at lvl 2 while pudges still only had 600