What's the weirdest one you've tried? Most challenging? Have you found any really cool defining features in any distro?
For example GoboLinux and NixOS eschew the Linux file hierarchy standard (FHS), and that becomes their defining feature. But many other distros have some other defining feature. Slackware uses tarballs as package management and oldschool init. LFS has you build from nothing. Etc.
Actually kind of an amazing read. I suspect it shall live another life on 3-axis router tables and such for a while. The mechanic is single stroke lettering remain the same