Uranium IV
How about creating a separate, special division for toxic players, instead of banning them? They would be able to reform there or they will never get away from that "prisoner island". Getting to that division would be easy. Getting out and reclaiming your previous rank would require you to reform and be kind.
The other way of getting out (not sure if this is good or bad, maybe shouldn't be implemented) would be grinding through Uranium and getting out by pure skill. That person would lose a lot of time and would easily get back to Uranium after being toxic. So he would need to reform anyways.
The only problem that I see is that ... I would be hard stuck Uranium IV xd
Only a sugestion. What do you think about it? Would it work?