You know what I really hate? Well, if you read thread titles, you'll know!
I hereby propose that the "Timed save completed successfully" message be banished to the void between dimensions. I really don't see the purpose of it. It's bad enough that the "Saving Quest..." window pops up, but that I have to click OK every 10 minutes is really irritating (especially since I apparently have a habit of going into the tile editor at 10 minute intervals).
If some people actually like this window (for whatever reason), we could have an option to turn it back on. Also note that I'm not suggesting that the "Save error!" window be removed, since that's important. Just the "Everything is just fine, move along, move along." window.