Call me old-fashioned, but I liked the feel of RSE. The oldschool graphics, the sprites... (gosh, I miss sprite animation) and the way it just made Hoenn seem...bigger? I know Hoenn was never intended to be a particularly big region, it being an island community and all, but the way RSE were designed, it SEEMED bigger. And it just felt like there was more to explore.
I feel like Soaring took away from that. (I want to clarify here though that I don't dislike the concept of Soaring itself.) And I feel like there was less mystery. Though that was due in part to all the spoilers in the promos, too.
ORAS is fresh to death, and brings a lot of new things to the table (like Arrun and Lisia), as well as breathing a little more life into older things (like the contests-I particularly enjoyed the revamp on them), but it's just so different than the originals that in a way they don't even feel like the same thing. It feels like two separate games that happen to be based in the same region rather than one game being a remake of the first.
I'm not really complaining, per say, because I immensely enjoy both. But my rose-colored glasses make me a little more biased in favor of RSE...guess that's the power of nostalgia.