A quick tip about impossible to read extreme metal logos: Symmetry is crucial. You're going to want the M,R,B, and E to be symmetrical on either side. And don't be afraid to add all sorts of extra flourishing to any part of it. Upside down crosses, pentagrams, roots, branches, icicles, wings etc.
Think of it more as a design than as a text based logo.
This a is a really great start though. Can't wait to see the final.
new stickers for flatstock.. might do a few tees too..