(Spelled cliche) I think it would be totally strange if Nasuada or Arya got it. I kind of expect a Varden....er, or a dwarf.
Don't think it's going to be Roran..... In the 2nd book.... there was symbolism involved... When he threw away the pebble, it was like him throwing away his chance at magic....?
I think it's going to be found out that Galbatorix and Murtagh are gay lovers.....That Eragon, Arya, and Nasuada have a love triangle and that the little freaky girl is addicted to crystal meth.