Zep, can you enable a couple of simple features?
First, can you show a list of games-in-progress for custom and ranked games? Don't make them joinable, just make them visible. This helps keep away the idea that FAF is empty when it is, in fact, quite full.
Second, please give the option to remove or hide the ad banner.
Third, please show trueskill rankings of players in the custom game lobby and, perhaps, the truskill prediction of the outcome of a game in that lobby. Maybe also add "truskill team balance" option to help ensure balanced teams which would use the most balanced teams possible for the match.