Yeah, EQ2 is nice in that the classes really are, for the most part, balanced (raid roles being an exception). Unlike some MMO's and even in a lot of cases in EQ1 you don't need a specific checklist of classes to have a good group. In EQ2 pretty much any tank + any healer + 4 of whatever else you can scrounge together will be able to take on 95%+ of all the group content in the game. There are a few exceptions...instances that have encounters uniquely suited to one class or another, but they are rare. For the most part a healer, tank and whoever else you can get to tag along will do just fine for almost anything you'll run across.