I liked the V4 map a lot, not saying I dont appreciate the work that went into V6, but I am saying I would pick V4 surface instead of V6.
However, this will either way require rework, and will this be too much? Previous map suggestions/additions were cancelled for reasons, one being the map couldt get more map. If there is a limit on how much stuff you can have, then it may not be possible unless sacrificing some stuff inside the Foundation.
+1 for the suggestion
Though how this will actually work is still foggy