The entrance road is going away so that opens up some options there, and the hotel probably isn't going there. There will also be room between the land and the GMR building, and there is room in the south west corner. This area is marked as Star Wars Land on that map. but there are actually a bunch of back stage buildings there.
Gotcha, that's good to know, because I was just looking at maps of SW in DL and it looks like there's an expansion pad to the east (according to Micechat), plus Toon Town if they want to go nuts.