Well it's getting to the point where content is Phys heavy? Go PLD/WAR
Magic heavy? DRK/WAR
Can WAR function just fine? WAR/WAR
And I guess that's the issue. WAR is always valued at all times in any content while in some cases no one wants anything to do with PLD or DRK since their kit doesn't bring anything of value.
With DRK it quite simply wants to be in that MT slot all the time or it's kit gets crippled. Especially in lieu of Reprisal and Bloodprice.