Don't know if it's possible but would be very nice. Have the ability to make one team password protected, with the other teams having the same password protection or not.
As example, say you wanted to setup a triples game with a couple people, you would give the password to the people you want on your team and leave the other team open. Or say in a 4 team doubles, you could have 1-3 teams password protected so that people can join with the partner they want.
Reasoning: I'm lazy and it's hard to setup a time where all of the people I want on a team are online. I'll admit it's probably useless but hey, would save some time.