Make Behest reward "nation" points.
Instead of a stupid small amount of gil we are currently getting we should be rewarded some kind of nation points that could be spent in various ways. This way instead of gear dropping in Behest and random people fighting it out for it we could be spending those points to buy gear, teleport scrolls, raise scrolls, potions, etc. Tons of possibilities here.
I had an idea where there could be some unique bosses for each major Behest area or even one per nation and you could use a certain amount of nation points to gain an access to an "advanced battlefield" in which you could have a rematch against the boss with a group of friends.