They only two hero talent trees. Either spec can pick one or the other. There is no internal debate when trying to pick a hero tree that you don’t like to play said spec.
For example: beast mastery hunters can’t be sentinel so they either go for marksmanship or survival, but they prefer the beast mastery style so they can’t play that tree.
But demon hunters can just go one or the other without a problem. A havoc DH can just easily play the other tree if one of them is not meta.
Should demon hunters have another hero tree to make it fair for the other classes?