I would like to see the main Scions "retire", so to speak, without actually going away entirely. Let them stay in background roles, like Raubahn and the city leaders, but put the main focus on a new cast. Maybe the twins can stay at the Rising Stones to run the main group, Y'shtola could take over Matoya's cave and be our magical secret-keeper, Thancred could go back to being our wandering informant who pops up with plot-relevant info once in a while, and Urianger.......well, he's already spent half the game out of focus anyway, so I dunno. Have him pop in and out with cryptic advice or something.

As for new characters.....honestly, I just want some visual diversity. Aside from G'raha (and the WoL, depending on the player), the major Scions are all pale fair-haired people. Give us a more distinct cast. An Au Ra or a Hrothgar or a Viera.