So as confirmed on the latest roadmap stream the first package of work is coming soon (ABOUT BLOODY TIME) and brings in some much needed additions to the editor. However I'm still not hearing anything about being able to generate flat landscape. I have no interest in recreating a real route and would rather make something that doesn't follow any terrain and is my own creation. The default unreal editor allows you to easily make flat land, but the TSW editor has this disabled. I want this to be enabled again. So do we have to wait until the next package for this?
It is also possible to use a .kml file to generate tiles without any LiDAR or SRTM (this will keep the landscape flat). Just draw a line anywhere on google earth and use that to generate the tiles. You can always increase the size of your map by extending or adding more lines to the .kml file.