[citation][nom]maestintaolius[/nom]Well, the leveling isn't what I was referring to, hell in CoH/V you can get to 50 in 2-3 days if you know the right people. It was the gearing up for endgame content I was talking about. Almost every 'mainstream' MMO required weeks of killing the green boss dragon to get people geared up to geared up to kill the blue boss dragon and then weeks of killing the blue boss dragon to get that level of gear so that when the expansion came out your guild would be ready to kill the red boss dragon. Of course, if you quit playing for a few weeks during the green boss dragon farming you'd be behind the rest of your guild and couldn't participate in the red boss dragon runs (or be kicked). Of course, you could always join a casual guild but then you wouldn't get to do some of the endgame stuff.It's that constant character maintenance structure that most MMOs have that I really disliked, the nightly grind, to the point where it's almost a second job.[/citation]
Originally, MMO's weren't quite like this for vast majority of their life. Leveling took months if not years to reach max level. Every day was an adventure that required grouping to advance at a decent rate and you'd group to quest as well.
Due to the extended leveling time, and the social requirements to level at a decent rate, you gained much of the fun that raiding has today, without the requirements of special gear earned by a raid worth of grinding.
Of course once you did reach the top, which took ages, there were some raiding guilds that took it further and it more like today, but for most people, you got your enjoyment leveling. I really dislike the new system of having you grind for max level solo to be able to raid at the max level. The old group leveling method was more rewarding for those who enjoyed grouping the entire way through.