@bkjernisted said: Is it possible to collapse vertices or points in Sketchup as you can in Cinema4d. Merge all selected vertices to a point? I added such a feature to Vertex Tools 1.1 which I will release soon. It also has a function to merge vertices within a given proximity of each other.

If you mean UV[re]mapping of textured materials, then there are several scripts to do this... Search the 'Plugins Index'...