Another thought. (been thinking too much lately)
New 110 film, both color and B&W are now becoming available from sources like Four Corners Dark, for about $8 a roll. The film is made in China, brand name Fukkatsu, (the name apparently meaning rebirth or resurrection in Japanese).
I wonder if the factory making this film would see a market for Minolta style cartridges? There are still a large number of Minolta 16mm cameras that work fine. The simple 16II is very reliable as well as the P and Ps models. The trouble of course, is finding and contacting the right people. I would have no idea where to even start but somewhere, someone must know.