> Teamwork
Nitpicking, without Ichika, the main circle of I.S. pilot are highly individual people, they all have problem an act like they got the worst life ever. This translates to bad teamwork.
Ichika doesn't always solve their problem, true, but he provide just enough distraction for them to put down their stress aside or vent it on him. Poor guy doesn't get enough credit.
Putting this rambling aside, the canon cast could learn a thing or two from the boys, and the first and foremost is to avoid internal conflict in the circle itself. See? A good plot.
