The core new functionality here seems to be MASQUE proxy support, which is genuinely useful and probably not possible to provide in a plugin.
Of course the UI itself could be extracted into a plugin, but I'm not really a fan of the pattern of shipping a large feature and extract only the thin UI layer into a plugin. It felt very weird when Mozilla tried it with "multi-user containers".
Of course the UI itself could be extracted into a plugin, but I'm not really a fan of the pattern of shipping a large feature and extract only the thin UI layer into a plugin. It felt very weird when Mozilla tried it with "multi-user containers".