I have started using the rotten logs as chimneys in my builds because they let the smoke particles through which provides a pleasing aesthetic for my constructions. I wondered about the possibility of making new blocks from the same geometry as the rotten log, but replacing the texture with stuff like Brick and Gondor Rock and such to add a different textured chimney to a build. Thank you for your consideration and thank you for the amazing mod! See attached pictures for example of implementation.

This was just a quick model I built for an example.