Ditto, but I wonder if there is already a commercial solution available? I think my ideal case would be something like the DSI Prophet '08 module:
With or without wooden sides :)
So, still vertical mount with a recess for the rear connectors.
i got a STM32 core so it *would* fit the 17" one but as i already have the 19" panel and prefer rack mount anyway, i'd be in for anything 19" we'd come up with