It's also worth noting that, while DRK does have better magic mitigation than the other jobs, WAR and PLD don't actually have any real weakness in that either.

People need to understand that those that are lamenting the DRK's glaring flaws don't want the class dumbed down. In fact, most of us want the class to be properly complex, to take advantage of the wide breadth of tools it has available in a more dynamic fashion (because when we spend way more than half of any encounter just spamming syphon strike, all that complexity is lost). We don't want DRK to be OP, we want DRK to be actually worth considering taking into endgame content along with PLD and WAR.