Dont see what's wrong with "keep on course". The point is you dont need to waste fuel changing the orientation when the engines can only power/accelerate you "

Dont see what's wrong with "keep on course". The point is you dont need to waste fuel changing the orientation when the engines can only power/accelerate you "forward". Im struck by two things. Firstly the gyroscopic means to change orientation is cool. Secondly. I'm amazed they aren't using magnetic bearings already.