I still think that the broken part of the whole concept is the setting. The Halcyon was never featured in any of the movies, so to the extent that anybody might want to stay in an exclusive STAR WARS hotel in order to feel like they're in the movies, the Halcyon doesn't satisfy that. Nobody watches a STAR WARS movie and says, "Gosh, I really want to go on a deep space cruise!"
A hotel themed to Echo Base on Hoth or the temples of Yavin 4 would have been deep cut theme options, but the most logical one to me is the one I'm still kind of baffled they didn't go with: a glamorous, exclusive, high-society hotel on Coruscant, in view of the Senate and Jedi Temple. And as part of the hotel, build a single (and self-contained) Coruscant street outside for real, allowing for a trip to the sports bar or Dexter's diner from ATTACK OF THE CLONES, or something along those lines.