We did this very successfully for a short while in our 4e game. We played Madness at Gardmore Abbey (great mod!) and at the conclusion they restored the abbey, attracting adventurers from all over. So, we ended up with a sort of "Justice League" scenario, where DM 1 would run adventure X and players would pick which of their PCs would go on that one. We'd have concurrent DMs to prevent burnout, and then DM 2 would run adventure Y and the players would pick their other PCs to go on that adventure.Now, this concept is very interesting to me. In a vague, hypothetical sense this sounds cool, but I can’t picture how this would actually look at the table. Would you be willing to elaborate on this, particularly in terms of specific examples in actual play? What action steps should a DM who wants to try running a game this way take?
It was great all around.