I think Kemper is a bit stuck. The Motorola/Freescale/NXP DSP chip seems like it has to be mostly programmed in Assembly and has limited programming capabilities with C. That would mean that any code it runs can be efficient if you know what you're doing, but also that it's difficult to port to any other architecture without rewriting from scratch.
So if they went for modern Analog Devices or NXP DSPs, they'd have to rewrite the entire Kemper processing. Which is when you would be better off just rebuilding the entire unit from scratch for both hardware and software. Which means it's going to take years to get a product to market.
It's much easier for Line6 or Fractal because they are already using DSP platforms with clear successors that should be more or less compatible with existing code.
You've hit the nail on the head there. Kemper can never and will never move to another DSP processor. They will forever be scrambling to shoehorn things into the design they have, but their options are limited.
