Given inflated prices of cases, and toolset improvements (cnc, 3-D printers) it's much easier to build a "tower" these days ... grab a mobo mounting plate, a PSU, cooling fans of your choice, and that's it.
To have the case of your dreams, build a case out of whatever materials tickles your fancy ... wood, plastics, etc.
Many projects on my workbench just have the mobo on said mounting plate, psu plugged in, and cooling fan blowing on it. Case takes up too much space for project work, and I'm always having to stop effort to open up the case ... started leaving the case shell off ... now just use the mounting plate alone.