Quote Originally Posted by Tunda View Post
if we take tanks defensive part to make them unique it could be like this:

Shield tank (80% shield/20% other type of defensive utility)
Mitigation tank (80% defensive both magic and physical / 20% other type of defensive utility)
Max heal tank (80% Regen/healing-per-action, 20% other type of defensive utility)
Block tank (80% active and non active block, 20% other type of defensive utility)

and the challenge is to how we can add another tank in the roaster? it is really hard there need new things to add other than above.
I think I haven't made my point clearly enough. I really don't think it matters at all, we could have two shield tanks, or two block tanks without diluting identity. Consider for a moment two abilities that are on paper mechanically distinct:

WAR's Thrill of Battle: +20% max hp, +20% healing received.
PLD's Bulwark: Guaranteed block.

Thrill is effectively a 16.(6)% mit, and ignoring the fact that it has an extra function in that you can use it just for the heal, if you were to use either of those for a tank buster they are functionally the same ability: 10s of roughtly the same %mit/eHP increase on 90s cooldown with no interaction with any other part of the kit of either job.

Of the short tank cooldowns Bloodwhetting and Heart of Corundum are also functionally the same button regardless of individual effects. Holy Sheltron stands out due to its 5s cooldown and Oath Gauge being the limiting factor, and TBN love it or hate it is the most mechanically distinct.

It does not matter what effects are being applied if the actual gameplay - the why and how you press buttons while you play the job - are the same. It wouldn't be a problem if two tanks were build around just plain % mitigation if they are actually different in how you play the job, maybe one tank has to stand in a ground aoe effect for it's mit to work, while another has to make sure to maintain a buff at all times to use theirs, etc. It's not trivial, for sure, but it's also not impossible, other games have done it, often with more available tanks than 4 we have.