We all know there's too many worlds and that they're, on occasion, almost impossible to fill. And the only way to solve this is to merge two worlds, which gets rid of the history, upsets a lot of the owners and requires two worlds to both be desperate and then undergo a fair amount of coordination to make the pieces fit.
I'd love to see a situation where a world can declare themselves defunct, but that those teams/owners are then placed into an available pool where they can then import their team into an existing world.
This would make it much easier for everyone. Imagine a team with 17 openings - we all know it's never going to fill. So the league dissolves and the remaining 15 teams go into the available pool. Maybe a few of those owners decide it's not worth it so they leave their team and it ceases to exist. But there's still 10-12 teams. And then the next time a world is looking for 3 new guys, they can just see what's available in the pool and reach out to the owners/teams that match up.
I'm aware this is a dev issue, but something to think about long term.