I don't know. Personally I think for instance Homeworld did the whole full-3D combat very well( granted that the scenarios were still mostly 2D-designed). Excellent control system when you got used to it, although use of keyboard was a must.
I suppose there is not going to be a real solution for the turn-slow-down issue in the short. But can we expect in a future patch or mod (maybe) something in the direction?