Wouldn't the specialisation feel much better if we could overload instantly after entering an attunement? Isn't the doubled attunement cooldown enough of a drawback already for overloading?
What if the overload gradually became more powerful the longer we retained that attunement and the more weapon skills we used before overloading? That would feel more like an active class mechanic in my opinion, instead of passively just... waiting... for the overload to be ready. What if we could slightly customize the overloads with grandmaster trait options?