I love the ability to control volume and playback speed conveniently with the mousewheel and the cinema mode is especially useful for when I'm not using the monitor and instead using my smaller laptop screen (the regular theatre mode gets cropped off on my smaller screen and I do not prefer the default mode). I am also very grateful for the ability to stop videos from auto loading/starting when I open them in new tabs. I do not have to manually go to each tab to stop the cacophony.

Overall, a very very handy add-on and I'm extremely grateful to the developer. Many things have made using youtube so much less frustrating. I can loop videos and choose where I want them to start and end! Now that was definitely something I did not think I'd be thankful for until it existed. I encourage everyone to give this add-on a try! Thank you for the update and for the hard work and have a lovely day! <3