Just a little something: It kind of bothered me after completing the Tolranian Claimant "quest" that Lady Whats-Her-Name just becomes Queen and all of the "Tolranian Republic" stuff gets thrown out the window. I don't know if changing the faction name and leader title is possible after a successful rebellion, but if it is, it would be a nice touch.
Alternatively, the player could confront her about her Queenship, at which you could reply something along the lines of "Fine." (Nothing changes; maintain vassalship and fiefs, etc.) or "YOU *****!", which would begin another rebellion, this time with Nibor as the Claimant. Could be fun.