Well, the sniper is okay being lead, provided its not by someone she sees as a fool...all the rest though are problems minus the "new guy". Problem with the maido, is snipers generally relay information and take in the momment shots, so its not worth ordering her around.
Even if we were to put a lower rank in charge of the team, which isn't unheard of, when you have a group of hot headed nutters, a calm cool lower rank could end up with the "flagship" position if the alternative is the highers fighting.
The problem is here, I don't think but two or three of the S ranks even hit that spot.
So at best we can have four or two functional teams, but with the personalities, activity issues and with how slow iwaku in general is aside, I don't expect any of the teams to be functional. Unless whoever is team leader spends most of their time talking, or knocking, people down, or they take a "armored division" style of command, give objectives and turn them loose. Which of course only works out with tanks.