You don't have to be rude about it. It was a suggestion posted by a player, would you like it if you posted a thread and everyone commented rude things on yours?
I feel like this'll defeat the purpose of the gamemode. Why make it easy? It should be hard, or somewhat difficult to enhance better game play.
My opinion on the whole suggestion is that knockback mode should not be added. It will be dead in literally a week, since knockback already causes rage within the server. Speed sounds okay... But I think a different game mode should be added, since we have it in Egg Wars. But I agree, there should be a bigger variety on game modes.