Yes, and the cartridge could become a CARDridge using, wait for it, a second card slot! If one of the giants jumped on board, would the others quickly follow, in a SOFT or HARD revolution? 
Right....but then you'd need a screen of some sort, which the camera does not have either. Addition of these option would only drive up the cost, which given what it is, I doubt the market would handle much more of an increase.
many people were wanting this to be a metal camera with an APS-C sensor...but for the price, that was never going to happen.
I've always thought that if someone put out a bare bones camera:
Metal body with a 35mm or 50mm attached lens
Basic exposure modes, manual focus
digital APS-C with comparable IQ of our current APS-C market and charged between $500 and $800, they would sell quite a bit. I'm one that has migrated from an early mindset of needing all the newest gear, the sharpest IQ possible and the most FPS to someone that is more interested in the shooting experience. Capturing that ONE great shot out of a million possible shots that has some kind of meaning, tells a story.
I think that is why I like shooting more manual focus now. I'm concentrating more on the process, I'm deliberate, I like the way that the older lenses and coatings render images. There is something that feels more organic and analog about it. Much less clinical than the penultimate of sharpness, micro contrast of the modern optics.
