I'm not going to call this a request or suggestion until I get some feedback on the feasibility of it,
Currently, the available hierarchy is limited to verticle relationships, ie Parent > Child
My question is this: Would it be feasible to add lateral hierarchy? I don't know how many Una users would find this useful, but I have an application where a "Sibling" relationship would be useful. The only requirement would be the establishment of the Sibling relationship, and the ability to display a Space's Siblings on a page, whenever those relationships exist, I'm suggesting relationships only.., no complicated inter-woven privacy/permissions/visibility. Everything between siblings remains isolated and independent, linked only by the sibling relationship.
The parent-child relationship isn't always appropriate, Sometimes you need lateral connections.