I suggested them to put:

- A random video from the ones uploaded in the last minute.

- Another random video, uploaded anytime

In both cases, these videos should be shown regardless of language, view count, etc.

In most cases these random videos will be junk, but I bet there will be gems which would die unwatched otherwise.

no way, some guy probably did an A/B and showing random crap instead "increases engagement"

I don't think they measured it on a period of more than a couple of hours

Isn't that what the "subscriptions" is? It depends on the algorithm,

Besides I generally do get new videos from subscriptions on my front page. And in my "suggestions" for unrelated videos, and in my search for unrelated content, and sometimes even in category tabs for content it is not a category for. I get it, I'll watch it later, I know where to watch it.