I've always thought the merch thing was the biggest issue coming with Star Wars. Merch and Butterbeer are what made WWOHP the success it is. Sure, FJ being a huge leap forward in dark rides helped, but without the revenue generated by the land, Comcast would of never bought the parks and give us the renaissance we see now. Before Hogsmeade, the only place people could get any Potter merch was in the expensive collector magazines and the like. There was a huge, pent up demand.
Star Wars merch you can get in any store you look at. They're going to have to be really, really creative with the stuff in the land or else I don't see the massive crowd spending like WWOHP generated