Since a tech camera like the Arca RM3DI has a wide enough lens opening to accommodate a lens as long as the Schneider 210 digitar, (with non-bellows solid adapter), it would especially be an advantage to be able to utilize the added precision, versatility, and compactness of this type of system, in combination with a smaller 24/36 type of db, for those few into landscape like myself who would prefer to be able make full use of the extended range provided by longer lenses. In this scenario, a smaller sensor with 36+ mp would actually be preferable, even though some advantages of the larger sensors with bigger pixels would be lost.The extremely high performance Rodenstock Digeron-s lenses, while having relatively small image circles, would be an additional plus, bringing forth the best out of the smaller sensor.
I would be very happy have an IQ 140, which would still provide pretty good reach and sufficient movements with the digeron-s's, but like some others posting on this thread, I am reluctant to make that investment at this time. As Hank Williams Sr once sang, I'm "Just Waitin."