2. If present I'll click 'Deny', but I'm not hunting it down. Blocking the prompt with an adblocker is my preferred option.
3. Cookie Autodelete is the only sensible way to manage cookies IMHO. Store cookies for webpages you trust, delete all others. Annoyingly there's no official way to tell webpages you don't care.
4. Cookie banners are entirely pointless since I'm fully in control of which cookies I am sharing.