Really useful when you have multiple YT tabs open and then you sort them, i like sorting them by duration. It always help to have an idea about how long are the videos. It helps with my productivity. I'm also writing to pinpoint that this addon have a CSS conflict with Tweaks for YouTube by InzkDev, another excellent addon. You can see it in ytp-right-controls class, there is a div style="user-select: none; ... that causes some problems in the visualization of the other buttons. Probably something related to display inline If you can fix it It will be great adding a class and targeting it with the CSS Fix. Thanks for your work.
This is the snippet as shared by InzkDev from Tweaks for YouTube with only a modficiation to address the right spot by me. He is helping me to solve the conflict.
.ytp-right-controls > div:nth-of-type(1) {
position: absolute;
left: -5000px;
}
Then I updated to version 1.5.1 but no luck because that I returned to version 1.3.2 using the hack above. Thanks anyway.

This is exactly what I was looking for, I was even considering making it myself, thanks!