There’s a document from Vin Lanana out there that expresses this same idea.
His phases have levels of importance, where in the base face the Threshold is the most important while the vo2 work is not as important but still present. Good way to put things man.
Even something as old as Daniels prescribes all things at all times, but with different focus. Besides his base phase which is 6 weeks that could be better utilized, imo. Unless you are dealing with somebody who is coming back from a prolonged period of complete inactivity.