I actually don't see the appeal of CoH beyond the nostalgia.  The actual gameplay was pretty staid at best and it took forever to get a character from 0 to endgame.  It never really had the social scene CO did at one time, or if it did, it was never really in Pocket D or anywheres I was going about.

Oh and for full disclosure I don't count the like 599802348932498328923 people asking me for pictures of my tits to prove I'm female to be a "social scene".  More of a social cesspit.