These things only seemed to hit retailers in my area at the k stores, Kmart and KB. Kmart had a rocky start with theirs but sold out fairly quickly after that yet never ordered again; KB really put their backs into selling this line as my local stores are still getting sets (1 store had a ton of that HTF Ep 2 set). It's too bad WM, TRU, and Target didn't get behind these, they were a surprise hit of last year and deserve better.
I think that if any future is to be had with this line, it has to balance the needs of the mature collectors like ourselves with the intended playskool audience... which basically means ONLY immediately-recognizable characters and vehicles. Figures like Tarkin, Biggs, Shaak-Ti, etc., will be a strain on the cost concerns that Hasbro will naturally have because they'll basically be "extra figures" that kids probably won't get excited about. That's probably the area that has given Hasbro so much pause in continuing the line - but I think it can be overcome and lead into a popular line. Look at the Rescue Heroes figures out now, they're quite popular and have spawned imitators like Spider-Man & Friends and now a Disney-themed line - Star Wars All In One Adventures should continue to be there with them. Hell, that Spidey line keeps chugging on and on even though it seems like it should have died a quick death.