I'm not wildly ecstatic about a team GOTM, though I'm sure I'd try it if it was implemented. On the other hand, I don't see why informal teams couldn't just submit their games to the GOTM scoreboard as it stands. Those like Leowind who may not have the time to finish could 'partner up' with a couple of others (or even just one other), give themselves a cool-sounding team name and play that way.
I think it would be fun to have some teamwork in the GOTM, but I'm not sure that a *dedicated* Team-GOTM would fly.