Erik - Reason flows forth from the passions. Whoever treats reason as if it operates independently of the energies has not yet begun to think.
Kants categorizations are useful but not profound or especially meaningful. He is still wholly passion-bound, has not yet begun to clearly reflect (on) it, which is to say himself.
Kants first axiom lies in the dark, and is thus useless to him, affording him honesty nor consistency.
With Schopenhauer there is a breakthrough. He discerns what it is in passion that allows for reason to come out of it: will and imagination (“Vorstellung”).
Nietzsche went on to dissect the workings of that phenomenon, and to integrate all conceptual understanding into the fundamental logic he had discerned in and developed out of Schopenhauers idea.
What we have here is a logic that is consistent with itself and includes in itself the ground of logic itself. From here on philosophy could begin to produce scientific results.
Nietzsches emphasis came to lie on the concept value. Herein he found the terms to the logic of what manifests as power.
I developed these terms to amount to a fully operational philosophical grammar. In Kantian terms, that means an a priori judgement that is equally analytic as it is synthetic. Or: a circular formulation that is not tautological but creative.
Creative in the way of man, the world, the will to power itself; the formula is an active representation, it “enacts” the world. It is thus “alive” - it behaves in the same way as what it describes - it represents itself along with the world. In this it is not alone - both Schopenhauers and Nietzsches ideas “behave” in the same way; as ideas that aren’t imposed on reality as if from some other purer realm, ideas that aren’t untouchable to themselves, ideas of flesh and blood. This is the lineage of honesty and power, two things that in philosophy are indispensible to each other. From the pessimism of Schopenhauer the idea of will (‘energy with intent’ to use your phrase) has become more optimist, more free to enjoy itself, more vital, healthy, fuller; more “well rounded”, a world to itself, voluptuous and incessantly (pro)creative.