Oh no the missal collide I know and I did it as a way to make it easier to get the enemies. And the on timer timeout isn't for the missiles it is for the missal launchers. That is because I just used the enemy spawner and put on a different script.
Hmm, the missile behaviour I'm talking about (where a pair of missiles will slide right instead of moving down while visibly flickering) doesn't read as intentional to me when playing - rotating the missiles to face their direction of travel might help communicate that this is how they are meant to behave.