Very cool stuff! I love sculpting in wax for smaller figures - it's how I did all the stuff for Palisade's "Palz" Buffy "Series 3" bits. Gives you the ability to work a very hard surface for small razor-sharp detail, rework, walk away, etc - and stands up to casting really well!
Your work always makes me want to start collecting toys again and I have to fight it - good stuff!