Here's what I was thinking on a rear panel design (see image). It doesn't have an ETH port, but that could obviously be added. I don't like having the MIDI ports split into two groups as on the other case, hence the need for panel mount MIDI jacks. Panel mount for everything gives more flexibility for layout as well. I agree the other case requires some strange use of spacers and such, so again, panel mount to the rescue. I couldn't find a panel-mount SD card, but I think some small L-brackets would do the trick, along with some spacers on the rear (IIRC that was discussed in the thread for the other case).
It has an IEC power plug + fuse so I could generate the +/- required for the AOUT_NG. I have samples of the parts that I measured for doing this layout and can supply part numbers if anyone is interested. I also have an SVG of the attached image if anyone wants it.
My idea for the top flat part (see image) was to do 8 trigger and CV outs, and have stereo audio in/out through an SSM filter. The necessary filter CV signals (2 x cutoff and resonance) would be shared with 4 of the CV outs and controlled via the filter enable/bypass switch (would need relays or a many pole switch to make this work I think). I've not tried it, but it seems the MB-SEQ should be able to sequence the filter which might be fun. And besides, that space just *begs* for something!
All your discussion on this case has gotten me back thinking about building my MB-SEQ...
Thx,
C