I can't give any feedback to your metal tracks since i it's not really one of the gernes i have experience in.
But if you every want to do more industrial stuff, i think the tracks could benefit from (more) metallic percussion and hits. This would also add more HF content, which i find the tracks a bit lacking. Think of a post-apocalyptic world where the only instruments are made of metal scraps (+broken guitars
). I think you would really enjoy something like NI's "kinetic metal" for this kind of stuff!
Try to experiment with evolving soundscapes in the background as well, like a dissonant guitar-loop with a multi-FX unit on top which parameters are automated throughout the song to provide a changing backdrop for the rest of your elements (dark techno and similar genres do this quite a lot).
Just my two cents, i hope you can get some inspiration out of this.
Cheers!