They are part of your offspecs. Indeed, borrowed power, power you have and use, it’s been part of class design for 3 expansions now. And when borrowed power is different for different specs, it’s terrible design.
When Venthyr is absolute best pick for dps warriors, and Kyrian best for protection warriors, what happens when you’re switching between dpsing and tanking? You’re weaker in one, which is degradation in game design. The whole principle of offspecs is that you can change specs and play them equally well as anyone else.
You mean how they just nerfed some soulbinds that were broken op in beta by 70%? After months of not doing anything? Yeah, great work.