I agree with most of your points, but I don't think South Norfolk merging with Norfolk would be as inevitable as you make it out to be. South Norfolk has never been a part of Norfolk. The main reason that Chesapeake even exists is because Norfolk was attempting to annex the portion of Norfolk County that surrounded the independent city of South Norfolk. Neither party wanted to be consumed by Norfolk, so they joined forces and merged to create the City of Chesapeake. It's true that current-day South Norfolk probably has more in common with Norfolk than it does southern Chesapeake, but I still doubt that any hypothetical partial merger would go over smoothly.