A lot of melee teams don't pan out too well. I had 4 DH's and a monk, and thought it would be amazing. The initial grind on dungeons up to 120 was great and their passive aoe damage was off the charts.

Boom hit 120 and tried a current dungeon, the mechanics just didn't play well at all with the situation and realized I couldn't push very far.
Still tried them for open world pvp. Had 2 horde sitting on top of a building. I couldn't reach them as they pew pew pew.
With ranged/caster, not a problem. Similar with a DK - just deathgrip and boom done.