Kagi should improve their video search experience by integrating DeArrow and SponsorBlock.

Here are my suggestions:

Add a dropdown option to enable DeArrow and SponsorBlock.
Replace those annoying clickbait titles and thumbnails with silly faces by using the crowdsourced alternatives from DeArrow. This will save users time by cutting out the sensationalism and make titles more accurate.
Show the length and number of sponsor segments under each video by using SponsorBlock. In the same way we can view the number of ads/trackers in the web results, we should be able to see the number of ads (and the lengths) in video results. Maybe even add an color-coded timeline showing where all the sponsor bits are.

A user would use these proposed feature by searching for something in the video category and enable the DeArrow and SponsorBlock options to make more informed decisions about what to watch.