I have to say I liked the exp tunning in the first beta much better than in beta 2.  Of course I know that the exp was toned down a great deal because of issues with Sovereigns hitting lvl 30+ with ease.  However a perfect example of why I think retune is needed is I assaulted an enemy city.  I had 2 champions and my sov, and 4 squads with me.  The enemy city had 6 squads plus city militia and a champion and yet the exp reward for victor was only 5 exp per unit.  Now granted that was spread over 7 units on my side, but 35 total exp for that battle is very badly out of balance.  The other issue I have is can the dragon statue quest line even be beat without a lvl 20+ sov and a massive army?