First things first,... helpers can't ban.Wouldn't you be able to backtrack past people who have been banned falsely, then just ip ban the Mod?
In the new punishment system we can see who has been banned before and who hasn't. Clear evidence is required though. We do not just ban players because of their past.
Ip bans will not become a thing due to the negative side effect of it. You can think about a brother and sister who play on CubeCraft. The brother is hacking and gets ip banned. Now the little girl also won't be able to play anymore....