For me, The micromanaging and focus mechanic makes the sentinel class the most fun.. I have a level 16 sage that does tons of dps in warzones. I feel like sitting back spamming the same rotation over and over is the most boring thing. I will say you have to do some work to get the amount of dps I tend to get in warzones on my sent, but it is what makes the class fun.
I have the same problem. Although for sentinel it isn't that horrible. For my assassin though, i cant stun someone if i want to successfully land a maul in their back.. the out of range **** happens everytime