Well for starters, you can not just market it as an arranger module. How boring!
You have to market it as –this thing that you connect to your keyboard and get great sounds and styles that make you sound like a band--.
Remember, the market is not just your traditional arranger players but more generally those keyboard players who find them selves doing OMB/DJ type gigs.

Do you remember the hyped the SR16 drum machine had when it first came out?


The sad thing about it is that the company who could really pull this off is the company who is least likely to do it (Yamaha).

This however may be something that Casio could take advantage of if they want to get in to MOTL and TOTL arrangers. It would add a fresh name to the professional arranger market.