Improve look

[s4b2x]

It would be nice to have the thumbnail image displayed.

The containing div is div.ytp-cued-thumbnail-overlay. This also contains the red play button that needs to be hidden when the overlay div is reshown.

Another style improvement would be to only show the info text on hover or move it to the top of the player. I think you may remember that you use the add-on especially in this fork where you need to enable the add-on in every single tab and browser session. The alert text isn't even completely accurate: it says you need to reload the page after disabling the add-on which is not necessary in this fork.

I'm a frontend web developer, maybe I can help.