When I worked for G.W, I knew him reasonably well, but I used to tell him that everything he sculpts looks like a miniature him, Whenever I was in a shop I could look at a mini and exclaim " oh look, a little Gary Morley!" I still shudder remembering his Elvis wardancers..
It's nice that he actually got to resculpt the clown and publish him, even though under different name Very nice mini - I like how this guy's face resembles the own one's, but as all Nagashes (!?) its not verstitale, being too big to pose as something much more mundane.
If you could bear to part with that wicked base you could extent the staff arm forwards in a casting/pointing position and have the left arm trailing, hand maybe close to Mortis' hilt? Or cut at the hip to have him looking or reaching back to his undead horde? Never say never with Greenstuff!