Proposed balance adjustments: 1) Nerf Eagle movement to 4 or increase cost. 2) Increase ranger cost by 1. The High Elves - Freefolk snowball is just too strong. 3) Consider decreasing uruk_warrior price by 1.
Or implement all 3.
Have been playing with all three settings: eagle range nerf, ranger +1 cost, and uruk_warrior -1 cost, and it feels much more balanced to us. It really doesn't change the feel much early on, as it doesn't change starting units or unit balance by much (eagles excepted). What these changes do, is make it harder to snowball and encourages more unit diversity.