I don’t disagree with your post but I’m still unclear on how you envision gatekeeper should work.
You want the ability to choose a different “authorities” that verify and sign binaries? That makes sense to me but is unlikely to relieve any of the issues in the post.
Also what do you mean by “even yourself?” What would that option look like?
In any case, Gatekeeper is mostly intended to save grandmas who are at risk of downloading random malware from the internet.
If you're a developer who is reasonably aware of how computers work you might as well disable Gatekeeper entirely. You're taking many times more risk every time you use Terminal.
Nowadays (as of Sequoia, I think), I find that I need to run `xattr -c Foo.app` to clear the “this was downloaded from the Internet” bit on the application bundle before I can right-click, “Open” it. Used to be that you only needed to do that with .apps extracted from zip archives, but it seems to apply to .apps copied out of disk images (DMGs) now, too.
You want the ability to choose a different “authorities” that verify and sign binaries? That makes sense to me but is unlikely to relieve any of the issues in the post.
Also what do you mean by “even yourself?” What would that option look like?