There are 4 movements that are not possible in freelancer:
Roll left/right
Strafe up/down
FL ship movements are rather bidimensional...
I dont know if its possible to add those movements to FL, given that the movements are hardcoded into the game engine... But if it is possible to add them, i would like to see them added to the mod.
(If you find any mistake in my English, please let me know via a PM)
(Really, I speak terrible English, so please, tell me if I make mistakes. I'd like to improve it a bit )