I honestly feel like they should just give TBN earlier cuz as it is right now is as ridiculous as PLD waiting till Stone Vigil for it's tank stance back at launch. Could nerf the shield potency of it until lvl 70 (at which point it's upgraded via trait) as well, that way it allows players the opportunity to learn how to use it over a longer period of time. The devs probably think low level squishiness is alleviated enough with the role skills reprisal and arm's length so I personally don't see them making TBN available earlier then upgraded via trait which in my view would be the ideal solution. I do miss Dark Dance though.