This may be a little OT, but it came to me reading this thread - Yamaha should put their TOTL and MOTL boards and put them into a module. Blindfolded, they sound great, but the tactile interface leaves much to be desired. I can'r begin to compare the Yammie arranger keybeds with any of the Rolands - and I've had E09, E60 and G70.

In fact, I think there should be more arranger modules. With all the keyboard controllers out there, it would be pretty simple to match up a 25-88 note keyboard that suits your needs.

Of course, I've had and trashed a couple modules. But maybe I'd give it another try if the features and my head were in the right place.