Stackexchange has quite a few sites now (about 100) and I am using a bunch of those. But lately it got really bothersome to go through the whole list to find the right one. And with the name changes, especially for gaming.stackexchange.com to Arqade it is even more frustrating.
What I propose is to add a filter or a search bar to the "all sites" tab, like this:
This search bar should filter the names of the sites and allow for further "keywords". Like "game" and "gaming" would also show the entry for Arqade or "writing" and "author" would show Writers etc.