It is a tad ironic that the big items are hitting at what has to be the eventual "tail" of the line. I wanted playsets, death star dioramas, bigger ships, and just about everything else you could dream up. But that was 5-10 years ago. Now, I'm cutting back spending, selling off portions of the 15 years worth of excess, and trying to turn the collection into a size that can be managed, displayed (in rotation), and enjoyed, rather than catlogued and boxed away.
It is amazing how much work collecting can be, and how much more work it can be to scale down the collection! But, I will happily replace my AT-AT's this summer. I love Empire, and am glad to see all the product being produced. I just don't know how much of it I am going to end up with, as I don't need a 3rd Dengar, 4-Lom, Zuckuss, or slave 1, or 10th (or more) Fett.
For those that are looking for them, I hope they make the sail barge, death star, and whatever else can be contrived from plastic. I just don't know how much more you can possibly have, and still manage to enjoy (that's not a slam, I just realized I had past that point myself some time ago).