I have to say the prospect of a wave consisting of Ben Kenobi, Artoo Detoo, See Threepio, Death Squad Commando, Sand Person, and Jawa kind of lacks the "draw" of the first six. When it comes time to do these I completely expect them to swap out characters for, say, Greedo or X-Wing Luke.
I don't expect them to do the droids if they can help it because of the current "no vac metal" policy.
I don't expect them to do the Jawa if they can help it because they don't want to engage in the "vinyl cape or cloth robe" decision.
For that reason, and for the fact that next year is the ESB anniversary, I do expect them to skip right to Empire Retros when it comes time for "Wave 2." My guesses are: Bespin Luke, Bespin Leia, Hoth Han, Boba Fett, Hoth Stormtrooper, and Yoda.