Even though I think R/S/E were my least favourite games in the series, I still really enjoyed them and would love to see a remake of them for this generation. I think it really frustrating that in order to complete the National Pokedex, you have to transfer your R/S/E Pokemon to D/P/Pl or HGSS, and then transfer them AGAIN to B/W. I know that B2/W2 have some of the Hoenn Pokemon running around but not nearly enough to complete a Pokedex, especially if you are trying to complete it on B/W (I'm trying to do it on White). Therefore I think being able to link up with new Hoenn based games, let's call them ShiningRuby and BrightSapphire, would be amazing.
Nintendo have been too keen to leap to the next generation in the past and I for one would love to see a R/S/E remake very soon. Especially since you could then match up some of the elements between Unova and Hoenn, like their Pokemon World Tournament and that Battle place in Emerald I can't remember the name of (which was a BRILLIANT place, by the way).
One thing, though. I would hope they adopt the Emerald storyline/additions rather than just remake the older, unimproved games of R/S. I liked R/S in that it was really the first game to show version differences besides what Pokemon you can catch, but I liked Emerald's "they're both bad, though one might be worst than the other" approach. Also, it'd be interesting if they brought in some more elements from the other games - well, probably it would only be B/W - with more characters crossing over to the region. Maybe even have a difficult final battle in the Hoenn region with Touko/Touya a la Red-style. I know a lot of people hated that but I found it exciting that you could fight Red at the end. It made the games feel genuinely connected that the character you once played still exists and is still Top Dog.