I'm probably seriously missing the point here, I don't get what's the point of Knight class, except to prepare for the royal archetype.
The thing about tanking in this game is, there's no point to it. You lose a turn for damage dealing, the tank isn't really more enduranced than anyone else, and still are faced with same weakness exploits. It would make way more sense to have low HP squishy tanks with unique skills that bypasses weakness/nullify Crits than anything else.
Instead I just get this thing that can't tank, can't melee DPS, can't mage DPS, and can't heal.