I think some new fresh servers on their own clusters would be good. Maybe with changes to the rules.
Have tribes limited to 10 to 15 people and 2 of each map in a cluster that you cannot transfer out of (much like the current cross ark servers) and even keep ORP, but find a way to punish combat loggers.
And if these servers were on a permanent 2x rather than only on weekends would be pretty cool too.