Good stuff. Agreed with another review - don't really need a warning. Now that the basics are down (excellent add-on!), I'd like for some enhancements. Basically, you know why I'm using the extension, so perhaps offer to automatically containerize popular websites (offer container packages). I think I'd like to be able to put every site in its own container, too, unless this would obliterate performance. Thank you! :)

Great extension, but I would like the ability to re-order the containers, and perhaps group them using dividers.

Sync is broken, default container names reappear on install, deleted too, waiting for someone to fix it, or I will, if I get off my lazy ass one fine day in the future

Great work by mozilla.