Out of the three tanks, WAR is my favorite -precisely- because of the aesthetics, WAR draws its power from an inner beast, and in my opinion SE has nailed that beastly fighting style to a T.

Despite the changes to WAR's kit since 4.0, I'm still of the opinion that WAR is no easier to play than PLD when it comes to DPS rotations, so I don't understand why people keep saying WAR is the faceroll tank.

PLD used to be the boring faceroll tank with their 1-2-3 combo and boring visuals, which changed in HW and further so in SB, thank god.

Anyway, I think the balance is pretty alright between PLD and WAR, they both have a pretty nice flow with PLD having a little more utility. But as for DRK, it's just way too complex and involved class to play optimally which is also negatively affected by latency due to all the oGCD weaving required (looking at you, Dark Arts spam), which I believe to be big part of the reason why DRK is so unpopular.

I think tanks shouldn't be too complex to play in general since you are oftentimes delegated to spotting and calling out mechanics, giving you less time to focus on mitigating damage and surveying the field, especially during progression and PUGs.