An "accept our cookies" window blocker would be so incredible. I mean how are they even getting informed consent when I can't tell what's going to happen when I deny the request? I want to read an article, not judge whether you're trying to invade my privacy.

Firefox, please treat "can set cookies" as a permission and allow me to set it to "ask" by default, and allow it to be toggled by clicking on the site permissions lock box. The existing user interface does not give me any control.