hah come one.. You gotta give a little more than that.. You don't think a true EQ sequel would appeal to a new player just picking up MMO's? What it comes down to is just being good. if the game is good people will play it. EQ was a GOOD game...
If a game is a good game, people will play it, but the discussion is what is considered a good game in 2013. EQ was a decent game when the majority of people were on a dialup modem so things had to be simple. The online gaming space is dominated by faster pace games like League of Legends, World of Warcraft, various FPS and FPS-like games and Starcraft/Diablo stuff.
What do they all have in common? You can log in and get into a match, play, and log out. You can log in WOW, do a raid/dungeon through the group finder for an hour or two and log off. In the space of an hour you can play one or two matches. The same thing with any FPS/RTS game. Even Diablo allows you to do designed runs with other people that don't take long to either set up or do yourself.
So I find a game that relies on longer gaming sessions, with strict dependence on other people without a matchmaking system a very hard argument to make if you're targeting a very large mass market audience.
That's not to say the game needs to be easy, solo-only and full of casual WOWtards who can't jump out of fire either. You can make a game that is tough, difficult and challenging that has harsh penalties for failure that varies on the difficulty of what you are attempting, however you need to create a modern system surrounding it.
You need some sort of match making system that puts players together to have fun. That doesn't necessarily mean a simple group finder, you can create all sorts of social incentives in a game (I won't go into them) that gets people together organically.
You need both difficult content and solo content (in LOL think bot games vs. normals vs. ranked games including the different tiers). You need to provide content for people to log in for an hour and have fun. You need to provide content for people that log on for 4 hours.
It's tough to do if you're going to mass market with these kind of principles, but it's essentially what EVE did. Unfortunately the game is not fun to actually, physically play. It's fun to be part of though.