If you ever want to reach that point, GNB is the easiest tank to optimize by far with no changes in their rotation. The class quite literally plays itself every single fight and your only considerations are popping defensive before NM Gnashing Fang windows and movement during Gnashing Fang windows. It is just busy and looks intimidating at first but comparatively is the most unga bunga tank to play at max optimization next to WAR.

DRK by contrast is very easy to play if you don't bother to care about BW and burst windows. Really free flow and low stress for prog.