or tame him with archers and chariots before he gets ironworking.
I'm all for UU balancing. IMO, all UU's should cost more than their normal game counterparts and provide much more quality per unit. The way its designed now, all UU's cost the same and are only slightly better (and in some instances worse) than the unit you would have built in its place.
Later UU's like SEALs need large attack power boosts though as their contribution to the game is minimal compared to the praet even at 45 shields.