I kinda wish there was a way to change the knockback of a weapon. I know power is related to how much the enemy is knocked back but I want a knockback value so you can possibly do stuff like making a weak gun deal a large amount of knockback to get the enemy off of you, having some weapons bring the enemy to you with negative knockback, having a really powerful weapon not send someone to the moon in modgun maps, etc.
As well, I think it should be easy to put in since there is already a value similar to knockback, which is recoil.