Dont forget that XIV was originally supposed to focus on group vs group as well as mobile combat (basically standard Final Fantasy combat we've seen from I-XII excluding XI). So yeah, the amount of running back and forth in behest could be toned down, but im not sure how the enhancement of enemies and the new battle system will effect behests in general. Behests are supposed to be like extermination missions...so your idea may work better with the way hamlet defense was supposed to be.