YouTube just launched a set of three features dubbed InVideo Programming that allows creators to feature a video across their video library. Creators can also promote their channel branding across all videos. Branding can be changed with a single update.
If you are a creator in good standing, you can use InVideo Programming by accessing the tool in your Channel Settings. Instructions from YouTube:
Example: Here you can see how Noisey used InVideo Programming to feature a new video across their entire library.