old fart
I agree that that was a great post , if I were to add anything as a rule of thumb , I would state that :
Not enough stagger = push
Too much stagger = loose .
Would stagger then be the go-to rough adjustment to put you in the ballpark for balance between push and loose, with other adjustments used to fine-tune?

Writing now I'm thinking other things would first need to be at a good baseline and then you throw stagger at it per experience to best match up to your current track conditions.
Then and only then would fine-tuning other things work as intended to bring it in?

Then it would make setup baseline your chassis with recommended stagger and tires, then if experience warrants it change stagger and finally fine-tune with whatever is appropriate?