I was thinking this. So best case scenario is we either get a new fully fleshed out separate game with an old region or we get a half assed region dlc for our Pokemon XY games.
Having said that, I would be more interested in putting my money forward for a game which added a full region experience to an existing game rather than a new separate title. Firstly it means only having one cartridge but secondly I just think it's more interesting to add to an existing world then create a completely separate world. I mean what's really the point of having your Pokemon XY region over here and your Hoenn remake over here and not be able to just move between both of them?
I figure it probably won't be until the 7th or 8th gen until they get brave enough to start having dlc regions though.