I’m only speaking for Arcane here but this might apply to other classes at the moment, entirely unsure.
It feels like Hero Talents lack very much choice and tunnel Arcane into one of two builds. Arcane Orb, or Arcane Missiles which are competing for CC procs. The spec revolves entirely around Arcane Salvo either way, and there is little to no room to play the spec any differently.
Hero Talents suck when they force me to play with a certain setup. They should compliment whatever I’m doing with the spec and offer options for the playstyle i’ve chosen, not dictate how my spec plays.
IMO, hero talents have become far too important and should be trimmed down. Use the additional levels each expansion to focus on spec trees. Instead of expanding the hero talent trees (which is tunneling the spec), turn more hero talents into choice nodes, and offer more hero talent trees than just two.
As it is right now, we were better off with the pre-dragonflight system. Current talent tree is the illusion of choice