Thank you for your review.

Update to reply: In version 2.0.4 - user choice enabled/disabled notifications have been added. In a previous release, also a tooltip when hovering the mouse over the Flag Cookies icon, when actions have been taken, can now be viewed and displayed, similar to the "page action log" in preferences.

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At present, you can see the count of removed cookies on the cookie icon in the toolbar. In addition, there are written details under "preferences" (reachable in the main view) and "page action log" for review.

To add further information when hovering the mouse over the icon. I haven't looked into that, but this sounds like a good addition to the interface!

Regarding the delayed removal of cookies, I would require more information. The main feature of the add-on, is the ability to remove unwanted cookies automatically if not allowed or used as profile cookies. Or to delete particular unwanted cookies by flagging them especially.

But if you miss this as a feature and you want to provide me with more background information where a delay might be useful, I can see how this fits in or if this could be added as a addition to Flag cookies.

The easiest way would be to add your feedback as an issue on the add-ons Github issues page:
https://github.com/jrie/flagCookies/issues

I then try to get in touch with you about this feature.