I Seriously Think That Theres No Better Person To Fit The Roll Of HighKing Than"Jarl Balgruuf The Greater"! cause he seems to have the right idea on the cival war situation...another person who has the right idea is Legate Rikke ...and they both realize that Even though Imperials are thalmors ^%%^ they know that having imperial law is better then Ulfric becoming highking and just sitting around lawlessly so i seriously think Balgruuf would be the best Highking.