I've just recently starting playing EVE Online, and I can tell you that the system has its drawbacks-- yesterday I had to log off because I had a wartarget camping my station, and if I left, I would have gotten blasted to pieces. Later in the day, I was mining and had another enemy warp in on my location with a much more powerful ship than mine-- I had to hightail it out of there, losing my ore completely. But on the other hand, a complex system like this leaves a lot of options open, too-- if I wanted to, I could buy my own powerful ship, and go and hunt that guy down when he least expected it.
Combs points out that EVE has gone into PvP in ways other games don't even dream of-- instead of blowing up ships, you can undermine other player economies and even throw propaganda out there designed to break apart player alliances. And a system this complex leads to generals and troops-- players might be involved in a war they don't even understand the cause of, all in the name of competitive gameplay.
It is definitely fascinating stuff-- I've started thinking of EVE as "the MMO of the future" because the kinds of gameplay it invites are just scratching the surface of what MMO makers will be able to do when the figure out how to harness it. Charging into the fray in WoW's battlegrounds is fun, because you're taking on people basically your own size, and everyone in the field has at least a fighting chance. But entering the asymmetric PvP universe of EVE is a different experience entirely-- you're out there in the deep end by yourself, and it's either hide in your station, or eat or be eaten.