From what I have seen of the heroic talent trees that will be added in the new expansion, it’s a bad idea. First, you’re naming them in a particular way that brings about an expectation. For example, everyone knows what a Dark Ranger is and everyone has an expectation of what a Dark Ranger should look like, but what you’re actually doing is just enhancing a couple of talents that currently reside on the class/specialization trees.
I would drop the naming scheme of the talents and simply put dragon portraits around talents that you want to enhance. Once the player character reaches a certain level, they get additional talent points, which they can apply to these dragon portrait talents, which, of course are only accessible when the character reaches a certain level. For example, you put one point in black arrow, once you character reaches level 70 a dragon portrait appears around the talent and you can further apply talent points to it.
There’s no need to create an extra shrubbery next to our talent trees. And you don’t have to waste a good heroic name.
Unless you plan on altering the animations of the class abilities to better reflect the “heroic talent tree” you are simply just wasting the name and creating an expectation that will never happen with this new system.
I think I rambled a little bit, but my point still stands.