I enjoyed WW1 until the novelty wore off... after a week or two the endless cycle of up, head to endless furball half way between bases, kill, get killed, wash, rinse, repeat got dreadfully monotonous. It's like playing basketball with no baskets, or football with no goals - it desperately needs something to focus the players' efforts.
What I don't get is why some people want to turn the MA into the same thing - and why they aren't enthralled with an arena that embodies their ideal game so perfectly.