I want to use YouTube’s default player controls.
It has all the options I need, especially the speed option. I very often speed up certain YouTube videos. I occasionally use the other options too, like video quality, and closed captions.
I don’t see a need for the controls you’ve replaced them with. I suggest either remove them, or at least add an option to disable them in exchange for the default YouTube player.
It would be nice at the very least for the controls to come back when you double-click to go full screen. The quality change option is crucial there.