Not surprised at all to see most of the original cast returning. Probably the worst kept secret in recent times.
More interested in the Adam Driver, Andy Serkis, and Max von Sydow picks. We've known for a while that Adam is playing a main protagonist of some sort. Going to go ahead and make the assumption that Serkis is going to do his mocap thing (glad they havent thrown all CGI techniques out the window). Sydow...now with prosthetics...maybe casting a Obi Wan force ghost? Hoped they would pull in Ewan to pull off a old (or young) ben. No idea.
Most surprised by the age of the "young" cast considering they really arent young whatsoever.
It all looks good. Just brings up more questions though. Bring on the set pics.