Not really in any particular order.
1. Persistent zone number in the Object Properties dialog under the Objects tab.
2. Persistent “Map Size” in the dialog under the menu Settings.
3. Persistent terrain type selection i.e. Grass or Forrest stays selected.
4. One level of “Undo” for the last operation.
5. Allow selectable colors for the red viewing square in the navigation map for color blind people, maybe red, black or white?
6. Add hat views for look around in addition to the location Point of View.
7. While scrolling or “flying” the terrain, maintain a constant altitude except for collision with the terrain instead of the constant height above the terrain.
8. Check box to show roads similar to “Field Numbers” and zones or “Grid” lines.
9. Stick setup dialog for changing the move buttons.
10. If CT requires a new terrain editor, that it be released at the same time.

While I'm here, an Object Editor request:
If there is a maximum number of objects for a single tile being built in the object editor, that the limit be displayed. Otherwise, the request is that memory handling or the array size be expanded. It starts silently choking at around 1200 objects but I have managed work arounds that build .shp files the TE will accept.
Thanks for the review.