The one bad thing about the Evolutions sets is that you have to buy all three figures for the twenty bucks or whatever, even if you only really want one or two of them. The Jedi set next year is a perfect example. I only want the Qui-Gon, and couldn't care less about the other two. But, if you're interested in all three figures, Evolutions is a pretty good deal.
The vintage figures are probably a little over-priced, but at least they're all available separately, and in many cases, particularly with Target, they'll be on clearance within a couple months of their release.
But yeah, I'd like to see maybe two or three more waves of vintage. Just enough to get all the remaining main characters and army builders, and touch on the more iconic aliens and droids and bounty hunters and such.