I love this build, that is pretty much as I planned to make a wider case.
I wouldn't go the MM style build as imho it's to bulky for it's needs but this does look very well built and great craftsmanship.
Instead of getting it anodized or powder coated, how about using some 100-250 grit sanding paper (or maybe even a screwdriver) and "scratch" it badly. Then paint it in "insert color" and re sand it with a small grit (400-800). which would leave the scratches filled up with "insert color" and sand it from N to S to give it a worn look.

Just an idea, very nice build I'll keep an eye on this one.