VERBS, AUXILIARY. Will, with second person ironical or imperativeWill is sometimes used with the second person (like the Greek optative with ἄν) to signify an imperative. It is somewhat ironical, like our "You will be kind enough to be quiet." Perhaps originally an ellipsis, as in Greek, was consciously understood, "You will be quiet (if you are wise)," &c.
“You'll leave your noise anon, ye rascals.
there is no imperative, but there is irony. On the other hand, "you will," perhaps, means "you are willing and prepared" in:
“Gloucester, thou wilt answer this before the pope,
“Portia. You know I say nothing to him: he hath neither Latin,
French, nor Italian, and you will come into court and swear that
I have a poor pennyworth in the English.