I agree, Ilum is absolutely terrible. It is a zerg fest, consisting of one faction riding around looking for armaments. We get the odd night where it is actually faction balanced where some decent battles take place, but the lag is so terrible most people just quit.
The zone itself feels absolutely dead, and way too large for its current purpose. Why are there no npcs? Why don't the walkers do anything? Why doesn't taking a base mean anything?
The zone is not fun, and just sucks the life out of players.