I have set up containers to open my social media websites in a 'Social Media' container, automatically, through the 'always open this site in this container' dialog. This is great, and works like a charm for 99.99% of the times I want to open twitter, bluesky, etc.
But every now and then I need to login to work related social media accounts, which I would like to open in my 'Work' container instead, so I can be logged into a different account. This is basically impossible at the moment. Manually opening it inside the work container means the 'Multi-Account Containers' plugin reloads it and opens it in my saved container, meaning it logs me into my personal accounts. There is no override option for the saved rule.
I suggest adding a checkbox to the plugin settings, which restricts the automatic opening of websites in a container to tabs that are not opened in a container already. Perhaps 'Never open in assigned Container when already in a container'
This will allow users to manually open a tab in a different container using the 'RMB > Open in New Container Tab', and means the default rule can be overridden, and does not fight the user whenever they specifically choose to have a tab be opened in a container, while allowing the automatic opening of tabs whenever they do not.