Well, in my opinion, AST has to make noct sect interesting because of diurnal. Diurnal sect gives 5% spell speed and noct gives 5% heal potency. It's like they want a pure heal/support stance (noct) and a heal/support/attack stance (diurnal).

I don't think the skills should be changed (maybe collective unconsious and spear), just improve the noct heal potency to 10%. Is fine for me. Or even better, improve mind by 10% that it will be good for both heals and attack...