@jeroensangers thanks Jeroen! Hadn't check Zettlr out (although I think I came across it at some point.) Seems I can test it on the same file folder as Obsidian. Zotero connection would be useful. It misses the network graph. Will check if/how it prescribes certain things.
@ton I remember having seen comments in the Obsidian forums about people combining both tools.
As for the network graph, when trying out Roam Research it was the feature I was most interested in, but after a while I found that I never used it.
@jeroensangers that last bit is interesting, esp as a graph is something I had on my wishlist for ages (as an old 'The Brain' user), to spot emerging clusters, outliers etc. I am curious to see how I will perceive that in, say 3 or 6 months.