Cyp and Crew have already discussed their opinions below: http://www.mineverse.com/threads/a-little-clarity.73156/ http://www.mineverse.com/threads/the-blacklist.69932/
Support but this Idea would have a certain Limit, like if they have not Followed the Rules . Lets just give an Example lets say the {Player} Has been banned 3 times or more for hacking or Etc. It should result into like a Final Warning like @TADS4 has said Above but also should have the opportunity to Make a Ban Appeal and should not be treated differently ;)
Support, but just perm banned in the server thy were hacking on not permanent banned on minevererse lobby.
Support. Maybe 1st time a perm ban for 31 days, second time 3 months, 3rd time perm ban? I'm not sure, but I like this idea.