This sounds like it could be a community rather than a software function?

Seems like you identified a missing aspect, that could be beneficial to the threadiverse.

Although, I'm not sure this makes the most sense as a feature, but should rather be a specific community. I think it would fit in quite nicely with the other community building communities:

• !newcommunities@lemmy.world (announce)
• !communitypromo@lemmy.ca (promote)
• !lemmy411@lemmy.ca (user discussion)
• !fedigrow@lemmy.zip (mod discussion)

Now with: SuggestACommunity@instance (ideas)?

Maybe another community or a running stickied post, with people volunteering to potentially mod certain types of communities. Comment example in such a stickied post: "I'm potentially willing to mod a history or data analysis community".

If a post suggesting a community that matches the potential mod's criteria comes up, they can be tagged/pinged in the post so they know to come check out the post and see if they want to mod the suggested new community.

Start a Bengali language community then. World’s sixth largest language, massive literature, movies, Nobel laureates, the only language speakers in the world to carve out a country for their language. Yet they are mostly present in Facebook, Instagram and X. What a loss!

I take the risk of being downvoted to oblivion with this, but this sounds like a perfect case for a bot that would use text embeddings and clusterization in order to group suggestions and connect people.

"I am interested in helping open hardware, self managed communities, especially in France"

-> "Two people are interested in starting FabLabFr, can I connect you with them?"

You can just open a community on lemmy or piefed and it should pretty much be what you asked.

But a system where users could say the are willing to commit X amount of money per month to pay a moderator to moderate it is probably going to improve the chances of that really happening.