The problem is that the structures should somehow reflect what we see on the screen. If the player sees the bullet fly into the target and gets a "miss" he will be pissed.

I have seen the opposite in the past. It looked like my bullet missed a prone target but it was counted as "hit". That didn't feel right and it was probably because of the large structure size. Now that I made it smaller I'm going to play with it and see if it works better. It should...

I think that if you have to turn it should cost more AP than if you are already facing the target.