this is how it is in every mmo, ranged is always more convenient/easier. : /
this game handled it better by at least making it so you NEED one melee DPS for the limit break, in some other games people would just completely stack ranged dps.
personally, it doesn't bother me. i've always mained melee DPS and always loved having to deal with dodging crap and worring about surviving on top of trying to do great damage.