What happened to fun custom games.
The only concept here is to return the chat rooms and custom games to their former glory.
Sure, Dominion may have almost never been played but some of my greatest memories happened on that map. Removing chat rooms with the updated client essentially KILLED off all custom game modes like draft racing, hide and seek, hunt the Teemo etc. Chat rooms may have not been the most popular thing ever but were great for creating custom games with anyone who was interested.
I personally can not think of any reason to not have chat rooms back.
Some alternatives could actually be a rotating custom game mode queue having a lot of game modes (a list here http://forums.euw.leagueoflegends.com/board/showthread.php?t=223645 ) just to relax and have some fun after rough ranked games or even just a long day.
This may be overboard but I would also love to see a Dominion rotating game mode queue (not ascension just dominion) in all of its glory.
Edit: Probably not the correct board for this, if it isn't please let me know in a comment.