Jest Chillin
Member
I generally dislike the whole "space magic" angle, but at least when applied to mars and venus, it's used to create interesting places for the player to explore. Changing the moons gravity seems like a wasted opportunity to create unique gameplay when the players are on the moon.
Except that each planetary/satellite location that has PvE also has PvP maps. Having one or two maps with change in gameplay as all encompassing as a different amount of gravity is pretty drastic and likely wouldn't be received well by competitive players.