Just me, but I think that assuming these new movies will be set not a long period of time after ROTJ (i.e, while the gang's in-universe is still young enough to be having adventures like in the EU books), they should just recast them. I mean, they did it with Star Trek, and that turned out fine.
"There is something going on in time and space, and beyond time and space, which, whether we like it or not, spells duty." -Winston Churchill
"For of all sad words of tongue or pen, The saddest are these: 'It might have been!'" -John Whittier
"Apathy is death." -Kreia