Finished my clustering algorithm, works now like a charm with lower- and upper-bounds; spatial distribution is now taken more into account than before, see yourself:

click me

and because I don't want to bore you with algorithmic yaddayadda, here a shot of Michael, the main character of one of my personal projects - Razor for my Valentine, as I have worked on him in my spare minutes over the last few months:

The hair has to be improved, though - was my first trial with Cinema's mograph spline deformer.