TFW Game Freak almost completely ignores Unova and goes straight to Kalos in the remake/reimagining order. Everything else so far gets remakes and/or new games. Unova gets not even half a DLC (Indigo Disk was as much about Paldea and Kitakami as it was about Unova).

EDIT: TBF, Johto is overdue as well, since its remake came all the way back in gen 4.