Yeah, this is seemingly not super useful. I'd want (left, right) buttons to work, dialogs to work, and be able to leave additional comments. The new stage is big enough that there isn't too much added benefit here, only maybe on laptops really.

Worth adding the Libs at least if need in future?

The left/right buttons work in Firefox and Safari, but there's some kind of junk in Chrome that kicks you out of fullscreen. I'm not sure if it's use of the history API, or any (uncaptured?) keypress, or what.

The lib is still pretty buggy (e.g., we never actually see the "escape" key, so we don't reset fullscreen mode (I think?), so you can't enter fullscreen twice in a row (in some browsers?)). Generally, there's a lot of weird edge-case behavior to hunt down.

In every browser, the 2-3 second fullscreen animation just kills this for me, at least personally. On OSX, you can also get a sort-of-reasonable (?) alternative by fullscreening the window (Command + Control + F) -- the animation is still really slow and that retains some chrome, but everything still works normally and the animation isn't quite as bad (although, at least on OS X 10.7, the animation is still horribly slow). Apparently there's no way to disable the animation, either.

Yeah I don't see a strong benefit to the work here, personally.