While I'd absolutely LOVE for RSE remakes to happen, GameFreak has opted to continue on with a new generation. This was expected though. They're a business, they're not going to stop making new generations every few years otherwise they'd be losing money. Remakes work well, but in spades. If that's all they did, then Pokémon wouldn't be as far as it is today. I expect we'll get RSE remakes in the future, but first X and Y are what's coming next. RSE remakes will happen when GameFreak is ready.