The membership reflects the shift of activity away from Amiga, Inc. and QNX and toward Genesi. There's still a significant number of people from the early days, but not necessarily those directly employed by companies on paths that didn't parallel Phoenix's direction. In most cases (the noteable exception being Amiga, Inc. itself, probably -- though with things being as tumultous as they've been lately, who knows?) bridges haven't been burned, though, and it's possible there could be cooperation again at some point in the future with whoever's traveling the same road.
As for a reunion, it's hard to predict human behavior, especially in groups. I guess there'd be either 1) sulking partisans holed up in separate parts of the room, 2) open warfare (food fights, fist fights, etc.) or 3) lots of beers and laughing all around. Your guess is as good as mine. :-)
-- gary_c