The over-tuned respawn rate makes Zerg the only viable strategy. It’s impossible and pointless to pull mobs and strategically pick your way through a zone. The first mob will respawn and be on your heels before you engage the second. There’s no time to find and target the healer. No sense in finding the safest, most strategic route. All you can do is cross your fingers, run, and stealth (if you have it).
I enjoy playing solo and the spontaneous/casual group up for an Event. GW2 is ground breaking in that it encourages casual cooperation while allowing solo play. Ironically, I feel more compelled to join a party in GW2 then in any other game—and I hate that. I understand the need for a party in content that is designed for group cooperative strategy and mechanics, but to be forced to run with others just to make it from waypoint to waypoint because mobs respawn on top of you is not fun.
I really hate to say this (I’ve been waiting for GW2 since GW), but I’m about to resub to other games.