I mean part of the reason they were scrapped and/or rehashed was because the amount of talent points became bloated by level 80.
It seems like the route Blizz is going is to just perpetually keep us at level 60. Which I'm fine with. But instead of all this borrowed power stuff, why not just give us back our talent trees and improve on them. They're far more exciting when leveling. And Blizzard can perhaps introduce "talent pages" for when we need to quickly respec (no mis allocating points accidently).
They can keep the current PvP Talents to compliment the actual Talent Trees. Thoughts?