If they're serious about Star Wars, it means a huge investment somewhere. Being the franchise that it is, would they seriously spend more on Avatar or Belle's story time than Star Wars? Making a Mos Eisley Cantina is cute, but it's sort of underwhelming.
The idea that Disney would spend huge bucks and make a brand new Star Wars area of the park as the biggest project they have going on makes a lot of sense. If anything, I think they'll probably wait and see how much traction the new film gets. Star Wars is potentially huge, but everything ebbs and flows. I think they want it to be as big as it seems like it ought to be. Star Wars could potentially sustain it's own gate, honestly.
That being said, moving a couple of tomorrowland assets to EPCOT and repainting future world doesn't seem like much in comparison. They probably want to see how the new film does as well.
Keep in mind that the new film would define what tomorrowland is, not our expectations about the theme park area has been like for the last 20 years. Astro Orbiter can be converted to TIEs vs. X-Wings.
So, we're not moving Space mountain to EPCOT, we're rebranding both future world and T-land.