Please add the support to manage extensions per container. I use 1password and would love if only select vaults could be enabled per container (ex. work container only uses work vault.) It would also be nice to have extensions only enabled for some profiles and not others.

Excelente extensão.
Agora consigo abrir mais de uma conta do Whatsapp ou outros sites ao mesmo tempo.
Com essa extensão, não é necessário abrir um outro navegador ou aba anônima.
Parabéns ao Firefox.

Been using multi-account containers for a few years now. Don't know what I'd do without it now.
One feature I wish they would add is to be able to delete cookies, etc. by container leaving other containers alone.

Useful and needed in modern web browsing to separate your personal data out of big brothers.