My two cents on this topic.
If a user has broken the rules so many times that they have been banned then why are we inviting them back to come back to the community.
This will only drive users to break the rules because they know that in 90 days they can come back and do it all over again (Trolling) Although I know this will have been thought about for a length of time but it does seem very confusing are we just encouraging people to misbehave and just get away with it with a slap on the wrist.
This rule change will send people away from the community, This will just allow more trolls and your more valued members will dwindle away over time.
This is very true not everyone can play the game to your liking but when these people are causing problems every 90 days will moderators want to be dealing with the same people, Uploading evidence, Dealing with the appeals. It just feels like a easy cop out to get the player numbers up which like I said earlier its going to drive the genuine players away when they get fed up of trolls.
Instead of just 90 days. Why not have 90 days, 6 months, 1 year. This would work a lot better in my onion