Well, maybe its time someone started thinking outside the box. This is fifty year old technology we're talking about here. Just look at the ZINK technology. No inks! No cartriges to change, just special paper. Dare I mention this in a film forum, but a digital to print hybrid might be the ticket.
I fully intend to use FP-100C and FP-100B in my LAND 104. I have a feeling that the price will jump through the roof when polaroid stocks are depleted though.