Wallabag might be what you're after.

Wanting more diverse experiences and perspectives is exactly why its beneficial having large amounts of people concentrated in one community. People want to be able to interact with a large amount of people, in one place where they can get the benefit of the collective knowledge and experience.

I agree, it should be transparent and decided on by the instance but think even a few beginner oriented defaults would be helpful. I think the onboarding and default lemmy experience is quite poor and anything to reduce friction for new users should be encouraged if it can be done transparently.