If it plays out like the Aqua/Magma idea, then the player is the key to stopping the other team. May/Brendon were the real reason why one team was more triumphant than the other in the end because the PC tipped the scales over to the opposite team's side.
I would like it if true too, though they could always been two parts to one Plasma. A covert Ops group and the original group. There are a lot of mysteries still surrounding this team.