It’s not clear where the numeric preferences (e.g. 10/40/50) should be defined. Is it in user settings? Or should it be right next to the Subscribed/Explore/Local/All toggle? And is it a digit input field, or a graphical control like sliders? Anyways, details.

I don't know but yeah I think that would be details.

I’d also like the option to always show new posts or posts with new comments from favorited communities. This could help small communities and their subscribers to get things going.

But that's what subscribed is for, right?

Or well, we can implement both ideas with the same mechanic: Allow me to override the likelihood with which a post from a specific community shows up in my feed. This way, I can include both big and active communities in which I’m only mildly interested, and small and rarely active communities in which I’m very interested in the same feed.

This could also be addressed by giving smaller communities slightly more weight in general. To prevent their posts not appearing because bigger more active communities. But I think that's a different problem. Also, it was also trying to be addressed here: https://github.com/LemmyNet/lemmy/pull/3907