Importing paused straight from Firefox? Well, clearly there isn't such a function ... yet.
If autopaused launch isn't good enough, or saving from browser to autoimport folder (which can also be set to import everything paused) isn't good enough, or just saving to desktop and double-clicking there isn't good enough (which is obviously what's meant by that function), or using the inbuilt search engines isn't good enough, then do what everyone else does: post a feature request in the Requests forum. If enough users +1 it, there's a good chance it could be implemented.
There have been no other users with this 'problem' afaik, so I have no idea what you mean by those other locked threads. Post the links and let's look. And please: just stick to plain text only, we don't need the shouting.