I'm suggesting when you get forum banned, you are able to read just the ban conversation that the banning mod starts with you. You will not be able to do anything but read that message.
Honestly not much point to forum "bans", waste of time seeing as you're never actually informed of why you're banned until(if) you ever get unbanned. I'd just go with Pile's suggestion and add the removal of a user's ratings, then mute them for as long as the "ban" would be.
HOLY HELL SUPPORT When I was banned a few times ago, I wanted to see what the message was. Never found out what it was. My alt was banned :lol: and I'd like to know why. I haven't used it for anything. It was just, there.