This is complain for the sake of complaining.
There are tools. Every job within said role must have, especially tanks and heal.
All tank must be able to survive the same set of TB otherwise you could end up with content where some tanks simply couldn't clear due to them lacking CD. (a good example is Paladin sentinel, you're paying 60 extra sec for that 10% extra mitigation which is useless (since all of it weren't useless Tha. Other tank couldn't survive). This leads PLD have CD issue other tanks, especially war sont have.

Same goes for taunt shirk and all those other tools. They all have it because they need it. This is also why they aren't job skill but role skills.

Regarding other things like their burst windows. First they do feel totally different to play, second during SB DRK suffered from having no burst windows. Being able to align your most potent spell with other players buff is an important part of this game.

Tanks are fine and you're just trying to find an issue for the sake of it.