Yeah I've tried a couple of times at getting Neo4j into stacks but the outcome has always been it's pretty much limited to baking relationship data pre/on dem

Yeah I've tried a couple of times at getting Neo4j into stacks but the outcome has always been it's pretty much limited to baking relationship data pre/on demand that is saved elsewhere and cleared out otherwise you get into prohibitively expensive licensing / infrastructure territory very quickly. At that point a more pragmatic solution has always won.