I played zombie rpg yesterday, and bunch of lvl 1's who can't fight stronger zombies were freaking out and shooting anything infront of them to save themselves; which results extreme gang bang push. I was forgiving in the beginning, but it started to vex me a lot.
Here's the suggestion of mine again.
1) When you want to push a player, aim your crosshair right on the player; and not to make players get pushed when the crosshairs aren't aiming right on the player.
2) No bullet push, but eneable explosive push; such as M79 and grenades.