Simple: In every mode (except DM), force the last player in a 2v3/3v4/4v5/5v6 match into the spectator mode.
So we keep the PvP stable in the amount of players on each team.
The spectator can join as soon as one teammate dies. The teammate that just died is now forced into the spectator mode. This will keep on circling as soon as there are enough players on the other side.
So why not? :]
Greetings
EDIT:
Add this:
Yeah, and he should not have his MMR lowered or anything. So he can just enjoy the show and also get his HC.
Edited by FakeName, 01 April 2015 - 03:33 AM.