Extra warning after leaving just newly added coin page

Hi

I know this one is a little bit of low profile request, but I would appreciate if there could be an extra warning like the one when you leave messages page without sending any. In the past it did happen to me, that I forgot to add coin/token to the site just after I have created a new coin page.

Would it be too much to ask, if a warning could be set up on such page when a user wants to leave it and she/he gets a message "Do you want to leave this page without entering a coin?"

Many thanks & LP