The ability to host your own 1 grid server / island alongside server migration would resolve a lot of issues with rust being extremely unfriendly to casuals and players who play with time restrictions.
Being able to leave your private server to migrate to an official one to pvp / farm for the day / night and then return with a portion of your loot would allow solo players and small groups to invest the time into set up things like a base / farms without having to be concerned about being offline raided that same night by a group with 3x the players and available free time.
I understand some people will hate this because they won’t be able to gaurantee offline raiding a group for all their loot but that’s kind of the point and server migration is going to happen regardless.
I think a change like this will also help promote players to start doing online raids again if they have no certainty of success offlining a base that might be empty once the owners migrate away from that server.
There’s also always the option of opening up a bounty system later into the wipe cycle that will allow you to invade a players private island to try and raid them.