I completely second this. I've built several apps where this is needed; e.g. molecule for many atoms. "Just draw a circle around the entire subgraph and mark it as an entity"
I have connect an aggregate molecule object to.... what.... the first atom?...
$ neo4j-admin set-initial-password <new_pw>
^ weird that this ran successfully, but then could not authenticate in UI. However, the default neo4j pw string did work...