Originally Posted by Zloth
Ah, but City of Heroes didn't force you to group! Well, not much anyway. What it did was instance almost all the interesting content. If you go into your mission with six people, the spawns were set for six people. If half the group left the team then you would turn a corner and, poof! The spawns are all set for three people! Even when outdoors in non-instanced hazard areas, enemy spawns would be bigger if there was a large team around.