people will find something about every class we say.
the most useless class is by far priest !
at least to me...
sure they have healing abilities dispells and CC.
but they suck at DPS at 19, even if well geared, they just suck at it.
so they are stuck at healing or CC before dieing. even FCing is a moot point.
so because of that to me, the class is quite useless if it wants anything else then healing.
but its not the only class in that situation, druids are quite lacking in DPS at 19 as well.
mages are good at dps, they are good at CC and those saying it cannot kill anyone really needs to step up its game with that mage. the only thing i'd give them is the squishy side of mages that makes them easy to beat. but at the same time, how much spell can you dish and how close to their "OH SHIT" button have you thrown them before they got to you ?
so really i think all classes have their own ways, no class sucks more then any others. its all a matter of how you play, and if everyone was up right, it would then become a game of who has better strategies, not who got better classes !