I'd somewhat disagree that's the case (as in the issues only lie within the classes themselves; of course they do have glaring issues with identity but that's not everything), but then again my expectation of what tanking should be like to be fun is different than other people.
Honestly, leveling my Paladin has been quite boring. The only reason I'm trying to level it is so I have a tank at 70 for my FC.
Paladins are in the best spot right now, but I'd argue underlying issues surrounding tanks themselves still remain.
http://i.imgur.com/8uDO2NJ.png
