1) No idea, but I don't see why it shouldn't.
2, 3) Of course. Those are usual links with images.
4) I'm not sure what you are talking about.
5) It will work fine. If you've setup offsite image and script storage in XenForo configuration, make sure to add js/responsive/responsive.js there with the rest of scripts.
6) I've never heard of it.
Inline ads: you can do it same way as without this add-on. Edit thread_view template to add relevant code.
Attachments: if browser supports file uploads, it will work.