The next step is retopo which I covered in the post below, but I got a twist thrown at me. I'm trying the plugin Nex. I heard about it on a tutorial somewhere, and it looks awesome. I've figured out what I need from it (the quad redraw tool), but it's a whole modeling revamp for Maya. I've noticed it broken my edge selection - I can't select more than one edge loop at a time anymore - but it makes up so much more that I can't care.
Anyway, here's a screen cap of the final ZBrush model. I'll post some screen grabs of the game res tomorrow.