I once landed next to the trench hole back in GC. It looked like more than 2 meters wide. AND, I had almost no problem in hitting the trench hole, you just need to approach from the right angle.
EDIT: TV guided rockets? Maybe you will put in that R2D2 spot if you know what I mean. 
Left click: repair craft.
Right click: Proton torpedos 2 seater jet BF2 laser sight blah. Maybe you could add something like an automatic lock so if you fire while aiming at a vehicle it would lock on and fly at it it? So: if a lets say a tie fighter has an Xwing on its tail, "R2D2" fired the rocket while his crosshair is "on" the tie the rocket will quite sureley kill him. BUT, if the tie pilot does some sweet trick, the R2D2 guy won't "hit" him and the missle wont even go after him.
Is that balanced and codable?
____________________________
I'm called RasdenFasden ingame.