Hi Arthur,

I'll add these features to the next update of the addon.
Stay tuned for it :D

Update1: version 0.3 has been submitted with these features:
- add support to show/hide related videos.
- add support to show/hide recommended videos.
- add support to show/hide videos at the end playback.
- Add browser icon to update settings of the addon.
- Add page action to enable disable the addon manually for any page.
- add shortcut (Ctrl/Command+Shift+Y) to toggle the addon.

Update 2: version released, try it now.