I can agree with the rest, and agree the current platform won't support a big UI rewrite. But for the next gen, it's a must.
I was checking out more guitar stores in Tokyo yesterday (ESP Museum in Shibuya was awesome), and there were a couple of young Japanese guys trying out a FM9. Seemed like they had a hard time figuring out how to work it so they had to ask an employee. I was tempted to go help them but I was not confident in my Japanese.
I think someone will figure out a QC, TMP or even Helix much easier because you have less "how do I get there?" issues compared to Fractal. Fractal already has a successful template for this too - Axe-Edit.
For next gen they have to figure out how to translate Axe-Edit to a small touchscreen and have the physical control to support it.