"Draft" machine wrapped up. Now some plastics printing is in order, for neat VGA breakout and power switch, and I'll also try designing and printing a clone of the original left expansion panel that's missing. And the whole original package needs cleaning and restoration.
Final product will have as close as possible (period wise) Olivetti peripherals around it. Meanwhile, I'm pretty happy how first version turned out.
And yes, the CPU upgrade doesn't work without the daughterboard. Intel 8088-2 is in there, but doesn't work at 8MHz. So the documentation around the internet should be updated with that fact.