Really cool, I dare say. I have done one a similar one today for my next MRQ book and I must confess I "borrowed" a lot of ideas.
A couple of suggestions:
a) place a slim, blank column between the characteristic block and the attribute block, and between the attribute block and the location block. It improves readability a lot.
b) scores that can decrease during action could use some space to the right for a fast markup of points lost, including location HPs and weapon AP/HPs; many people track wounds in pencil on stat blocks
c) marking unarmored locations with a dash instead of a zero is more elegant
But above all, I like it a lot.
