Right...
So what's the problem with having both UI's available? Everybody happy.
Clearly some people like the new FSS game very much and some don't. No need for FD to change anything at all about the FSS, just add a system map reveal back in and let players choose how they want to explore.
As I have said before, no targeting from the system map carries over to the FSS. If players want the advantages of the FSS, speed, not having to SC, discovering the presence of POI's, they have to use the FSS game-play to locate and scan the body. This would allow all players to play the game as they wished... Blaze their own trail.
Allowing both systems would require dev time to re-introduce the old mechanics and more dev time to maintain parallel code paths that accomplish the same thing.
Dev time being a limited resource, I'd much rather see it applied to issues that the game has had for a very long time and have long gone unfixed, instead of trying to a appease a very vocal minority.