Texture sets armed up and sent to spirit, you can also get them here:
https://www.dropbox.com/s/6uahnrw014qztfg/rmq_textures.zip
The wads contain work by myself, Gb, OTP and probably some others.
The textures are based off the id1 textures and designed to fill out the gaps in the sets. Often there's a cool texture in id1 but you want to expand it into a style a bit more, which is what happened here.
The rotmet set is the one mentioned above, and is an entire texture set based on a single texture from id1; met14.