I've desperately wanted the SRV turret to control like that since SRVs were first released. As it currently stands, in combat it's just SO easy to get confused which direction the wheels are facing, and be unable to properly control the SRV. This makes SRV combat very frustrating, which is crying shame when attacking bases are some of the most fun missions available in Elite Dangerous (until the number of skimmers/etc overwhelms my ability to control the SRV while fighting).
I was a master of driving tanks while shooting in Battlefield 1942, but I find SRVs to be almost uncontrollable in combat - and I think this is mostly down to the turret not moving with the body it's attached to. Sadly this means that I have to resort to picking-off skimmers/etc one by one at maximum distance, while hiding behind a hill, which I'm sure is NOT what FDev intended, and greatly reduces the fun factor.
I suspect most people don't even bother with SRV combat missions, because of this problem (although they may not realise why SRV combat is so difficult).
This simple improvement would make such a massive difference to surface-based gameplay, I don't understand why this has never been fixed. And it will be even more important with Odyssey. Note to FDev: Some people might prefer the turret's vertical movement is still disconnected from the body, even when the horizontal movement is linked... However, if you are worried this change will make combat too easy, then simply don't allow vertical movement to be disconnected unless horizontal is also disconnected, as then the driver has to manually adjust for hills & bumps (when it moves with the body), which was also great fun in Battlefield 1942.
P.S. I use keyboard & mouse.