I don't see any feasible way you could make a Johto remake and have it not pale in comparison to HGSS. Even if they unironically went out of their way to make it as good as possible - BDSP are clear evidence that they won't waste time remaking games in (current engine) anymore, probably because they deem it too costly and much of a timewaste.
So the best possible scenario is just HGSS but with 3d sprites, at which point what gives.
We're also too close to reaching a point where the remake pattern gets insanely stupid, with overlapping games (GS, DPPt already; RSE, XY very soon with BW in between, and how the fuck are they gonna resolve the 2 in BW nobody knows). This is just another point where their current model is madly unsustainable, unless they expand the studio quite a lot soon. Even with their "let's hand it off to another studio" it's getting unreasonable.
