[Baalz]

There actually is often a decent reason to build land forts for UW nations - shielded infantry & archers. Indie troops can round out the UW nation's roster decently in some situations (Atlantis for instance can cast flaming arrows), particularly if you get some of the slightly exotic indies like elephants or longbows. Its a vector lots of people overlook, and a shielded heavy infantry unit can go along way when you've got a lot of arrow vulnerable dudes as national troops.