... But... these are process lenses and therefore next to impossible to put in a shutter.
Don't overgeneralize. Hexanon GR IIs are process lenses that don't go easily or inexpensively into shutters. G-Clarons are process lenses but most, if not all, of them have cells that are direct fit in standard shutters. The same is true of some, not all, Apo Ronars and Apo Artars.
That GR IIs' cells aren't direct fits in shutters is due to a decision by Konica, not to their being process lenses. And Rodenstock decided to design Apo Gerogons' cells so they won't go into standard shutters.
I'll agree with you about GR IIs' sharpness -- I've had a 150, still have a 210 -- but they are somewhat flary, need to be used carefully and with a hood.