I mean, I give props to the person for the effort, but a lot of that would be straight up broken. First, and most obvious, the "Veiled Beauty" passive; gives Major Heroism and Major Protection passively for using any skill in that tree. That would be incredibly OP. The only ways to get Minor Heroism right now is by falling below 20% health, or healing an ally below 50% with the Warden Ultimate. This Bard class could have 100% uptime on that and Major Protection. Which brings me to #2; AoE taunts aren't a thing in this game. If you give a class an AoE Taunt, you make every other class irrelevant tanking-wise. If you give them an AoE Taunt and Major Heroism, and Major Protection, nobody is taking DK Tanks anymore. That would be insane. And then you give them a Damage Shield from excess healing? This would absolutely kill every other tank build.

Other things would be smaller, but still notable. The blade tree basically looks like all Nightblade skills. The Song Tree has some good stuff, but I imagine that would be brutal to animate in a game without gcds.