I actually like how all the planes look together.
why not make this a game where you control not one but a bunch of planes on screen at once? like a big formation of planes.
I was actually thinking that. A game mode where, instead of power ups, you die to to spawn another plane by your side, so you'd have double the damage but double the vulnerability. Seems interesting, I'd imagine it'll become extremely hard once your plane formation fills up the screen