I have been collecting star wars lego since it all began back in 99 so i don't really mind re-releases. Some of the new re-release sets are such a major improvement over the original models how can you complain?
The main problem with the star wars line is that most of the iconic ships from the films have all been done. So re-releases of those ships was always going to happern, you just have to except it because there will be more! The new y-wing, a-wing and b-wing *wub* were so much better than the original ones that i bought more of them than i did with the originals so lego must be doing something right! I have 3 old at-at's but i look forward to the enevitable redesign of that set.
You can't just say TOUGH LUCK to customers if you want your bussines to be sucsessfull. You have to listen to what they want and try to deliver in a way that pleases most of them. Only when the new tv show airs are we likley to get lots of new designs and ships and that will be awesome. So start saving now :-D