@jimfrank Unfortunately if you're still on the old YouTube UI this extension wont actually work for you. As of version 1.6.15 I have decided to stop supporting the old UI as it appears the majority of users are on the new UI. You can read more about that here
However, version 1.6.14 will work perfectly fine on the new and old UI. You will just need to download and install the unpacked version of 1.6.14 which you can download here and follow these steps on how to install an unpacked extension.
I will take a look at your video and see about implementing some of those things you've mentioned 