It seems to me that the investment and trouble of MF are becoming more difficult to justify. I love my IQ180, but I can no longer show just anyone that the images it makes on a DF camera are obviously superior. Takes a reasonably skilled eye to see the differences and the 35mm cameras continue to improve - quickly. MF, not so much.
So, what could be done? Well, movements still benefit from the largest possible sensor plane, and we can suppose that those who use movements will continue to be a likely market for the MF manufacturers. Are there practical suggestions we can make that would help our technical and rail cameras deliver better moved images?
For my part, I am a great fan of discrete color captures - whether from multishot or linear scanning cameras. The benefits are obvious in those images, so the cost differential from small format becomes less of an issue. As lens and tech camera makers get into electronic shutters, remote controls and the like, perhaps a direction becomes evident. It is only a small step from building an e-shutter to adding a color filter changer. I would love to have an FPS - or even a central shutter - that gave me an option for serial color acquisition. That would be worth the price of admission.
Any other suggestions?