I was actually planning on requesting this, but decided not to for a few reasons.
1: Spinning around during pushback is actually quite realistic and I have seen it done many times while spotting and even while on a plane that was pushing back. Now, usually a spin is accompanied by a tow forward, but this isn’t completely necessary and as long as you are facing the right direction you can get out of there in about the same amount of time anyway.
2: Expert Server isn’t all Experts anymore, and Training Server would be ruined by this. People could use this as a loophole to taxi instructions both on TS and Expert, and even if it wasn’t being used incorrectly, a controller could mistake a weird tow for a taxi, even if it is a procedure used in real life. This could be abused as a “taxi while engines are starting” feature on the non-professional servers.
To sum up, this feature isn’t needed and while things currently work in a way that may not be 100% realistic, it would inevitably get worse with this implemented and we can all get by just fine and with pretty much no sacrifice without it. If I were to see this in the game, it would need to be accompanied with zones at every airport where this is and isn’t possible to do (ie the button isn’t available on an active taxiway and/or your tow immediately stops once you get to the edge of a non-movement zone), as well as a way for ATC to tell if you are towing or taxiing.