Back in the late 80s punk was pretty stagnant but there were still good bands playing other genres. I was lucky enough to see Godflesh, God, and Terminal Cheesecake. I never knew this band was a side project. Thanks to YouTube.com I have been edjamacated. http://www.youtube.com/watch?v=kGR8oRhrm0c&feature=related
Also a search revealed a website with all the side projects. http://www.godflesh.com/project.html
Not all Napalm Death will like these bands, but as I have said before punk should be about being different and not appealing to mainstream music including metal jocks.
Today there are numerous decent metal/crust/d-beat/thrash/punk bands. Some examples are: Toxic Holocaust, Oakhelm, Wrath Cobra, Uncurbed.