Best case scenario : Star Wars will continue to live on, the PT & latest SE united as a "cohesive" saga beloved by ADHD sufferers everywhere; the fans will, of course, consider the PT superior to the OT. The OOT will exist only on long-obsolete media and sought after only by film historians and a dwindling fringe group of aging purists. The EU will probably be 110% shit at this point.
Worst case scenario : Star Wars popularity will die down and be all but forgotten, remembered only by film historians and a dwindling fringe group of aging fans.
On second thought, I'm not so sure which of those two is the lesser evil ...