Everybody, prepare your eyes for Lens Flares!
But seriously, I like the stuff that Abrams has done that I've seen. Granted I haven't seen much. Star Trek. Alias. Maybe one or two other little things.
And Kasdan's a good call.
Regarding maintenance of continuity, I'm hoping they just don't reference anything and don't make it so that it directly violates anything too significant.
For example, make it very far in the future. Have it so that the things from the PT and OT have implications for the events of the film, but the EU (even up to Legacy) just don't play a role.
Have a new Republic-like government, with lots of Jedi, that stems somehow from the end-result of ROTJ, with a threat that can trace its origins to the PT or OT, and then let the EU bridge Legacy to this new state of play.
The actors are old. Many look nothing like their old selves. Move things along and there will be no continuity disruption by the very fact that there won't be any continuity to disrupt.
-Sparks Nevada, Marshal on Mars
"Who cares what evil lurks in the hearts of men!"
"Unless evil's carrying the Martini tray, darling."
-Frank and Sadie Doyle