I thikk a lot of the warmer ‘heart’ topics require sharing more personal information than a large section of the lemmy users are willing to participate in.

It is an experiment. You don't have to give away super intimate information just because you are interested in topics that can support people in their personal lives, especially in an increasingly constrained but also disconnected society. For example, I am deeply interested in the health and welfare of children (as well as the environment) but I no longer have children in my personal life.

I see a risk of the proposed community falling into a superficial lifestyle magazine type of thing. You know like the ‘5 best pasta dishes for a cheap night in’ type articles.

Ha ha, don't pastafy the concept 😜 (btw, there is a food community here already). If from the beginning it were made clear that shallow, silly content was not the intent but that it is to provide current understanding and research on health, sociological, psychological topics as they affect people in their personal lives would this make it sound less sloppy?

What I’ve done with communities I’ve wanted to contribute in large ways to is search for a list of sources.

The area covered by this hypothetical community is far too broad to give a list of sources. I imagine these would emerge just from the posts put up by people, including for example, the reliable 'The Conversation', Guardian, mastheads and a plethora of organisations.

If this community were to start and I were to be a moderator (as you've suggested elsewhere) I would ask what genuine topics people here would be interested in and take some cues from that as well as put up articles that I find relevant. People may not be interested at all and that's fine but I believe it's fair to give them an opportunity to think of a new possibility.