TL;DR
Add the ability to find servers you have played onWhat ?
I occasionally join a random server and play a couple of hours, the next day it's not clear how to find that server.I think it would be nice to add an additional icon to the Favorite Column which indicates you have joined a server before. I modeled this with a screenshot turning the icon bluish to indicate you have joined in the past.
My ideal wishlist would be
1. Icon for "have previously joined" (see screenshot)
2. Icon takes into account server and game name (I might not have joined this instance of "Comfy Chronotrain", but I joined one last week)
3. Search option "Have previously joined" in Server list (see screenshot)
4. List of names of previously joined servers (that I can click if that server is currently online)