My goodness, LMP, you are tireless.
But, I would think that someone else should get the chance to mod a DW before you do it again. Maybe you could co-mod this next time around? However, since I'm not volunteering to take on head role, this is merely a cautious suggestion to hold up a bit. Others are, I'm sure, eager to have their turn at the concept.
As to what to do with non-participants, I think those who read WWJVIII know my stance... Mod Fire from Heaven, charred remains smoking on the ground, and all that. You can hardly prevent non-participants from signing up (unless you do your recruitment by invitation only) so the only way to deal with it in game is to zap them.