I’d like to see these kind of second brain tools mergable with a global anonymized database. Where my notes merge with the collective, and I can traverse ideas that spawn from my database into the collective whole.
I agree this is something we should have and it's what I will be working on for the next year or so.
One aspect I would like to get out of it is something like Wikipedia but with no notability criteria or censorship, since each author can choose which edits to include.
Each editor can choose how they want to moderate incoming edits. So I expect most editors would delegate most pages a service who aggregates other editors, and focus on just their core interests.