When you start a game you are launched directly to the map/level. So any "lobby"/config needs to be done directly in the game.
It would be nice to have the option to create a pre-game instance, where you may select:
- Define custom player (stats, perks, in a RPG type game or Class in a shooter)
- Manage the teams
- Ready button (so when all hit rdy) then you launch the game
- Perhaps could be manage like Warcraft 3 did with Private Custom Games where the "creator" manage can change team member, kicks player, invite them, etc
- The sky is the limit, this would give a lot of flexibility to customization of a game