The tile is done like Alderan shows in pic 1.
But, do we have to select individual vertices one at a time or will there be "group edit" possibilities?
There will be, of course, a set of group feature, some presettings for mountains, rivers, etc
What about adding the ability to the mapmaker to import topology from Blender or other 3D package?
I don't think we will need this. As I said above, I want the editor to be simple. It also will be much faster to do it inside the editor.
I am still in the test phase and I throw away huge parts of code with every try, but the base is done and I am satisfied with the progress.