Thanks!
Nice. I imagine it's a balance between getting it to be not too repetitive, but random enough that the 3 pixel skip isn't too noticeable without using the viewing technique. Works really well. I think I did 7 or 8 different pixel spacings to get the different depths, which meant I couldn't reuse too many tiles even though there were a lot of repeated components. I ended up needing to do some work and last minute tweaks to get it in at 192 exactly.