I know I'm going against the popular opinion here, but I don't think RSE remakes are necessary. Here is why:
Remember how Gen 3 was incompatible with Gen 1 and 2? Well, when you think about it, this incompatibility broke the five Pokémon generations into two isolated ecosystems (that's how I call them, feel free to coin a better term ;) ):
- The first one: Red/Blue/Yellow <-> Gold/Silver/Crystal
- The second (current) one: Ruby/Sapphire/Emerald/FireRed/LeafGreen -> Diamond/Pearl/Platinum/HeartGold/SoulSilver -> Black/White/Black 2/White 2
According to the official statements made back then, the main reason for releasing FireRed and LeafGreen was that incompatibility. By releasing these games, Gen 1 was recreated as part of the current ecosystem. A few years later, HeartGold and SoulSilver did the same to Gen 2. Thus, all generations are now available in versions that are compatible with the most recent releases (Gen 3 being compatible by proxy, through Gen 4), and there is no need for continuing the remakes anymore.
One more thing: ever since the reboot between Gen 2 and Gen 3, every new game was either an alternate version of, contemporaneous with or a sequel to the game that came immediately before. In this context, I can hardly imagine them releasing a RSE remake (which would be a prequel, taking place a
decade prior to the last games, Black 2 and White 2) and think that if they ever use Hoenn again, it would more likely be for a sequel (I wouldn't mind a new adventure in Hoenn... or better yet, in a whole new region with Hoenn available in post-game) .