They will NEVER be as good as the OT.......not with the crap that Ady has to work with as his base ingredient.....but they CAN be made into decent films. They'll never be as character driven as the OT....they're always going to be more like documentaries about what happened to Anakin Skywalker.....simply because of the material that George shot (or didn't shoot) and the way he chose to tell his story. But they CAN be made to be entertaining. MUCH more so than they are now.
And Ady has said that his versions are going to come in much shorter than their current running times.....which makes sense what with all the crap that has to be cut out.