Owner retention is becoming a problem. We're playing the same game, basically, that was rolled out on Day 1. Massive overhauls have wrecked games so that's not a solution. A bell or whistle from time to time would work wonders. While it would do nothing for me, custom colors/logos would have some jumping for joy. One suggestion I made that I think should be seriously looked at is varying world sizes. 20, 24, 28 or 32. That would solve some immediate problems.
But, more than anything, commissioners need to be pro-active to all issues. Replace absentee owners, start recruiting before the world rolls, enforce/create whatever rules will work in your world, etc, etc. There are a lot of things we, as users, can do. Complaining that WifS isn't advertising is one of them. But it's pretty unproductive and damn sure won't fill your world.