I was just using the Ink Sketch used-to-be plugin and thought of a few things that could be better/added:
+the color of the 'ink' could be changed
+have the ink on a separate layer (so it can be edited and such)
+the 'Ink Outline' scale to be extended
+include antialias
well thats just it....
I think it can be done... Well, can it?