Really? Wow! What is the plan? I'm trying to picture the input/output chain of cabling. I suppose a monitor for the MIst to adjust MT-32 modes and settings is needed as well as a monitor to play your compatible computer and games? It will be fascinating to see how the MT-32's front push buttons are done.
A dream would be a core that could work in tandem with other cores that could make use of it but that sounds like a lack of space and then some.
The reverse would be a MT-32 core that somehow has a little dos loader built in. Still, using the Mist as an MT-32 with other computers would be fantastic!