<p>I actually think we should stick to the 3 players per round... just allow teams to mix up the players between rounds. (Also, in the case that a team can't find a fourth, they can still compete... just at a tactical disadvantage...) Oh! And whoever wins a round gets the tactical advantage of knowing the other team's lineup before they choose theirs for the next round! (Maybe... I dunno, I did just kinda make that up just now...)
</p><p>I agree that the airbender's tag should be yellow; in fast paced competitive sports, colour co-ordination is crucial, so we shouldn't have the tag clash with the other benders' tags.
</p><p>I don't think the water vents should also let in the smoke. Rather, I think the smoke vents should be separate like the earthbender's clay coins are. Ideally, the smoke should also be able to somehow react with water, clay, and fire... so that we don't end up with another Wolfbat incident.
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