The biggest problem I continue to see is that ranged classes have no fear of melee. They do not even need to kite, they just stand there, pop shields/defensive cd's and tank our damage while they burst us down.
My main is a 50 merc with about 400 expertise. I don't kite any melee. I just stand there and go toe to toe. I do the same thing on my sorcerer. So on top of being able to go toe to toe i can also knockback, slow, stun, root, shield, sprint away, etc. depending on which of my ranged classes I'm playing.
On top of all this BioWare seems to be more interested in nerfing melee classes.