There's nothing really wrong with the style where tanks attempt to maximize DPS, the problem is right now that's all there is to the tank job.

In all of Alexander Savage, there are two times you need to use cooldowns (Plasma in A1 and Perpetual Ray after Royal Pentacle in A4) and 0 times you need your tank stance or anything other than STR accessories. If DPS is supposed to lend depth to the tank job, there either needs to be constant give and take and a few moments where you actually need to choose survivability over DPS or we need our rotations to be blown up to Summoner proportions.