
Basically, add a secondary filter, Looking for DM/GM/StoryTeller/Leader, and Looking for Players; in addition to typical filters. This way if you are a player, you can just look for a game with a DM already. "But this could confuse new player!" Simple, if "Only find games that welcome new players" forces it into only showing games currently Looking for Players. (Also, toss in a way to hide DM looking games if it a game is looking for both Players AND DM.)