Wow - I completely missed that. The case for Eragon/Nasuada really just gets stronger and stronger. It would make all sorts of political sense too, with Nasuada the presumptive head of the new government if (when) the Varden wins, and Eragon having that whole previous-government Dragonrider legitimacy.

This makes it even more sad that I still think we'll end up with Eragon/Arya.