For the windsuit, what is the over-compensation con? I don't quite understand what that entails.
Besides that, it looks like the suits are the better option, if you say that the ball/disc is floating on their air stream. If they need to hold it, then it has more of a con.
As for the flight, I don't see matoran being able to. Only hovering and controlling an air stream for equipment to keep them up.
But I do see Lewa being able to fly later in the story. She would start like all other matoran, but could hover higher or glide better while unassisted due to the toa power. Then she eventually learns to fly, even if it's year 2 or 3.