I played EQ1 for years, but moved on after PoP came out. EQ1 at that point decided to go the way of a raiding game and i was more into group boxing instead of raiding. I did raid as main tank, main heal and top dps with 2 rangers, but got tired of all the crying in guild cause people thought it was unfair i got 4 times the loot and only being 1 person.
So i left EQ1 and beta'ed EQ2, loved it and 6 boxed it for years. Last time i played my team was all level 80. I had an all melee team because casters were too slow and my melee killed stuff before casters could do much damage. It literally made me cringe to see casters try to kill a world boss or Elite, when i could have killed it in half the time with my melee team.
Don't know what max level is now or what group setup is best. But last time i played top level was 80, you could build a team that completely complimented each other. In other words, you could build a team of all caster buffs or all melee buffs, all ranged or all melee, all AoE or all single target, or just mismatch for any type of scenario. Also if you grow tired of your current class, you could do a class quest to change over to other faction and change to your opposite class, pali to DK, as an example. Was lotsa fun, now i may redownload because i miss it after talking about it again, lol.