I'd go for the following:

Sell the keyboard for 1/2 price with NO styles. Then pick and choose what styles you want for the style of music you play (from the manufacturer or from 3rd party). That also means do you want basic styles or do you want, and are willing to pay for, the cat's meow.....elite styles?

That's the same way they should sell you cable television, because I'm paying for 600 channels and all I watch is the news and the History Channel. I'm thinking of giving that up and connecting a smart TV to the Internet.

With arrangers, I think this would be the most dramatic change an arranger manufacturer can make. Styles you have no use for have been status quo since arrangers were in the embryonic stage. Time for a major change in marketing. I know I'd snap up a PA4x in a minute if I could select the styles I want for it. And it wouldn't be all 400 styles they drop on you now that no one (on this planet) actually plays!