Call me illiterate but that would be seen as either a mistake or as intentional rudeness.
We structure instructions as requests for the sake of politeness, and using a period here would come across as a very subtle mockery of this. In context it would imply some level of disdain for the recipient's right to turn down the request.
> Would you please send this report to the person indicated on the cover.
Wait, really? IANA native speaker, but I don't think I've ever seen such requests without question mark.