You mention Firefly but at least it got it's own film to tie things up. A similar situation occurred with Farscape a show I loved but got cancelled but at least got a mini series to wrap things up with. As for Disney, they have also been talking about Yoda and Boba Fett spin-offs neither of which are likely to be in the ST either. I'd also be willing to bet that a Darth Vader image/breathing etc will appear in Markerting (the most iconic film character ever) for the ST even though at best only Force ghost Anakin would be about. Maybe it's not what they planned but they should certainly role with it, specially given that it's got Lucas (who is fond of the show anyway) creative juices going again which they are gonna need for any future Starwars films/shows. Look I know that that show will have to end soon but simply pulling the plug like this, is just wrong.