I suggest you should create an option to have the DTM (DEM from ground points) and the DSM accessible in the same project.
Sometimes we need to use both DTM+DSM with the same project and generally we use 2 projects of the same area to have both solutions available.
It also stills a bit confusing distinguish the two options because they aren't completely clarified in the menu or in the workflow.
As an example of this need, sometimes orthophotos goes better with the DTM, sometimes with the DSM; to have ground contours you need the DTM,...
Like you did with the mesh, you might add a 3rd option and show the "mesh", "DTM" and the "DSM".
Thank you, keep the good work.