Mozilla is working on a new feature that would stop extensions from running on certain websites. The aim is to give people control; they can prevent all or some extensions from accessing certain private websites such as banking pages, even if those extensions already have permission to access all URLs.
The information comes from a post on Reddit in r/firefox by Alan, who identifies as the product manager responsible for extensions on Firefox.

The feature is said to be highly requested, but it’s also complicated to build from a UI/UX perspective. As a result, the Mozilla team is also looking for volunteers to join a 30-minute video call with Alan and a UX designer. On the call, they’d show mockups and ask some questions to collect further feedback.
If you’re interested in this, you can sign up from here. However, it’s worth noting that filling out the form doesn’t guarantee an invitation. The team will reach out directly in case you’re selected. The original post also asks anyone interested in the feature to upvote it on Mozilla Connect, and add potential use cases and further information about it.
In the same Reddit thread, commenters asked various related queries regarding the browser’s features. One of them asked for URL sync with Mozilla Sync, and for a way to import/export lists. The product manager asked counter-questions regarding it as well.

Other replies asked for PWA support on Firefox and Container Tabs for Firefox on Android, and again, the response was to upvote that on Mozilla Connect.

Another query was about the ability to pin disabled extensions on the extensions bar, to access them directly instead of needing to enter different menus for it. Alan asked why that would be helpful, and what the exact use case was. In general, the discussion mentions that it makes it easier to start and stop extensions when not in use.

In other Mozilla news, the company is planning to challenge Chrome with its privacy and AI upgrades in these ways. Additionally, the latest v154 update on desktop brings some new features. More on that here.