I would love to use Tor Browser as my default browser, set to Safest. The problem is that many websites are totally non-functional at the “Safest” security level. It’s annoying to have to go into settings, switch the level, view the page, then remember to switch back after.
It would be great if when I see such a website, I can click a quick switcher in the toolbar (two clicks: one to open the selector, one to select a level) to switch only the current tab to a lower security level, not affecting the default level for future tabs.