I really enjoy the class, it's fun, I typically top damage, and I don't die very often, but my main is (was) a 50 Sorc and the thread topic is laughable. Don't confuse fun with good. The game revolves around Sorcs and Tanks, everyone else is just trying to have some marginal influence on the outcome of the match. Unfortunately a good Sorc/Sage will kite you forever, and your damage is laughable against geared Tanks.
Also, no one should be complaining about Tracer Missile spam as a Sentinel. You almost hard counter them with the amount of interrupts you have.