I'm with you Jesse, I'd really like to see some of the smaller ships get re-dos as well (the Snowspeeder in particular). Like you said, the AT-ST/Snowspeeder/Speeder Bikes are all possible - and could probably all fit into the $20-$25 "starfighter" assortment if worked right. The Slave 1 seems like a good possibility, and like I've said before, 2010 would be a good time with the 30th Anniv. of ESB. Honestly, I'd probably be up for any new/redone OT ships, but I can see the issue with something like the AT-AT or Sandcrawler never being to scale.
As for the Falcon, I'm still curious to see what Hasbro will say about its sales. There were a couple at our local WM for $99 a few weeks ago, but those are now gone. I haven't found a single Falcon or AT-TE in our local stores (3 WMs, 3 Targets, 1 TRU) for awhile now, so hopefully that means sales have been good. The AT-TE, as others have said, may have sold a little better/quicker though overall. I still wonder if $100 is the real breaking point for a lot of people, casual buyers/parents in particular. Like some have said before, if the Falcon - arguably one of if not the most well-known ship from Star Wars - has slower sales, what hope do a lot of other ships have. Plus, we've discussed the timing/economic/competition issues as well.