This is a good extension and it does what I need it to with a minimum of fuss. It would be improved if the Maximize Player button wasn't hidden behind an options menu you need to hover over, though, or even possible to set up as automatic. It's basically why I'm even using this extension at all and making it easier and faster to turn on and off would be much more convenient.

edit: I am enjoying the new improvements to this. I wrote a new review, because I don't know if you'll be notified of changes to the old review, but it has been much better since the update. I would recommend renaming "video history" to something more informative, though. It took me a while to figure out where this annoying "continue video?" pop-under and shader were coming from. It is not what I thought it would do. Otherwise this is very good work.