It is clearly another 1 expansion temporary system designed for Dragonflight’s level 70 chars (talent points). It is again an unnecessarily complicated system and decrease in QoL, compared to current talents.
Currently: large spellbook + small talent tree = more baseline + less variables
DF: small spellbook + big talent trees = less baseline + more variables
DF’s “more choice” is at the cost of sacrificing baseline abilities. Baseline abilities are just put into talent trees from spellbook.
If current specs with less variables can’t be balanced by devs, the class/spec balance will only be worse in DF with new talent trees.
We know that, with the removal of borrowed power, they need to make another complicated system somewhere else. But, repeating a reused old system is not the correct method.
In future expansion, when we get more levels and talent points, it will inevitably become bloated and meaningless again, when this kind of tree is expanded unlimitedly, the same reason why it failed before and was removed.
They periodically bring back old reused system and pack it as a new feature for expansions. And this new talent trees will likely be removed after DF and replaced by another talent system again.