Is there a point to roaming around and fighting enemies besides the small amount of XP? It would be cool if the game gave you dynamic challenges if a certain number of players were in the area. Say, you and some guys are fighting near each other in Old Russia, the game could give you an option to survive a few waves, or take down enemies within a certain time. If the players all help out, you're guaranteed some nice piece of gear or cash.
Maybe I'm missing something, but I don't see the point of just hanging out with randoms right now, even if some of the emergent gameplay is kinda fun. I suspect this will die out as players get to know the game, and that's a shame. The most fun I've had right now is just running around old russia taking down lvl 8 enemies with random players just running by. It would be awesome if there was some sort of incentive for this. Like a dynamic fire team system or something for short bursts of play between beacon missions, just to keep that playful and casual type of multiplayer going.