I am quite nervous about the new trilogy as well. While I will admit that I liked the Star Trek reboot JJ did, this is NOT a reboot, it is a continuation of an ongoing mythos with literally hundreds of extended hours of companion product.
I personally would have liked to see them jump further in the future like the Legacy series (which are awesome, well I have not read the second part but the first 11 graphic novel run was awesome). I worry about elderly Luke, Han, and Leia and also about casting choices for the Solo/Skywalker younger generation (my hopes is they don't go too young, I don't want to see Jaina or Jacen solo as kids but as young adults, preferably in the decent into Darth Caedus era with Ben Skywalker young but not a whiny kid like AOTC Anakin)