Do you watch YouTube using your subscription feed?
You probably watch them in a loose order from oldest to newest, scrolling down every time, or add them to playlists, such as Watch Later, one by one to make sure you don't miss out on anything good.
Time and Mood makes this much easier. It groups your subscriptions by channel, only showing you the oldest unwatched video from each, just like Netflix does with show episodes. You can easily skip or add new videos in the queue wih one click. Time and Mood also works with podcasts.
There are easy import tools available for common types of subscription watching styles. You can quit any time and return to the way you were doing this before if you don't like it. If all that sounds good, why not give it a try?