So this game is crazy, when I play this game with over ear headphones it's like you're really in the game! but my problems with the game is
1. Kicking is too hard and too fast NH, the kick meter fills by its self and so fast you have no time to think, you should be able to control the angle and power of kicks based on head movement
2. it would be nice if after the game you could hide the menu to look around the actual stadium with the crowd cheering, it's just a crazy experience to feel which 98% of us never will
3. (optional) It would be marketing genius to make one for football like a field goal kicker and a returner and use head movements to run in a direction, I myself would pay around $7 for an app with an experience like that.
I know you are a big developer make some more VR sports games and you could make serious money, your soccer game has SERIOUS potential, best sports vr game for IOS.