1.Gameplay as long as its fun doesn't matter point and click or tps, should have both strategic elements and skill.
2.Quests with stories and a central plot.
3.Content random fun stuff
4.PvP, GvG, Huge wars.
5.Graphics 2d or 3d don't matter as long as its good. I personally love the snes graphics, so nostalgic.
6. community as long as a good amount of people play it im happy.
I wish they would make a multiplayer elderscrolls-like game.