Maybe, this is already added in the last version of MED.
If not, I would like to have the option to select vertices in the Model Editor, and move them in the Skin Editor like it is already possible in Triangle Mode, because it would make it much easier to adjust the uv-map at edges where the triangles are 'flat' like a line.
-Make use of the mouseweehl to zoom in and out in the skin editor
-An object menu like in WED, which displays all vertices, groups and faces as entry. So we could change the vertice numbers and select every object in the list.
-Make the faces selectable in the 3D window of the skin editor