IDN's not being displayed correctly: neither in invite link, nor in on-screen confirm message

When an invite by email is sent from a website that is an IDN (International Domain Name, a domain with an accent mark on one or more of the letters, whose punycode begins with xn-- ...) the accented utf-8 version of the domain name (for example société.com, not xn--socit...) should show up, so humans can recognize the domain (and website) - this should be done for the email, the acceptance link sent in the invite email, and the on-screen display of the confirmation that an invitation was sent. Also, many of us have multilingual websites, and since many of the fields in the on-screen confirmation display cannot be translated currently, could you make the on-screen email sent confirmation display optional? (so admin's can toggle it on or off?)

Thanks