I guess for full 360 X-Y-Z space combat you would have to set out to do it from the begining and do it right. The only trek game to do that was Bridge Commander (fight from he bridge or from camera). All sorts of manuevers were possible (like the ST: Nemisis "roll on our axis and face our dorsal shield to the enemy" and the like). Thing is, as stated before, the combat was designed for it.

I'm sure even decent programmers can squeeze more out of STO's engine, but at the moment STO's combat just wasn't designed for cover and accuracy (ground), nor serious tactical manuevering (space).