I dunno... it may just add a fun great new dimension to what we already know. It just depends... I have no idea.
I didn't think 3D added much to Alice in Wonderland, since that movie ws not shot with 3D in mind. It look beautiful without the 3D.... Avatar is a different story altogether... I almost got sick of heights when wtaching that in IMAX 3D... it was fantastic.
Are you talking about the potential new Star Wars films? Again, it was rumored by a highly credible source from IESB, and if it is at all true, it's likely we won't hear about it for quite some time.
However, they claimed it would be "well into the future." That means probably an entire new cast of characters....well beyond Luke's era.