The point b and c of "What I can build in copr" in https://fedorahosted.org/copr/wiki/UserDocs#FAQ specifies which licenses/projects can be built in COPR. It might be good to have a reminder of this in COPR itself, maybe the login page, maybe the copr/create page Also, point e about guidelines should may be exclude the packaging guidelines as if my understanding is correct copr allows package that do not follow completely Fedora's packaging guidelines
Link to this item of FAQ is in "New Build" tab in WebUI. Is it enough for you? This document is what I got from fedora-legal. If you want to change this point, please read previous discussion on fedora-legal@ and discuss it there.
Maybe mention b and c in the New build tab with add a link "more info on what you can build"?
Fixed in commit 5d29791. It now state: You agree to build only <a href="https://fedorahosted.org/copr/wiki/UserDocs#WhatIcanbuildinCopr">allowed content</a> in Copr. Check if your <a href="https://fedoraproject.org/wiki/Licensing:Main?rd=Licensing#Good_Licenses">license</a> is allowed. And the same text is in header of page, when you are creating new project.