If there was a HUGE market for new styles for the Audya, then the likes of AJ, Robert, Sokratis & even Ketron would have made more styles available. All of the above gave it their best shot, but because of the feeble response lost further interest in the process. Just look at the number of styles available from these over the past six years.
Let's face it, there are fewer Audya users than we realize & even less are in the market for new styles with new audio drum loops which are very costly to produce. I do not think that ANYONE would succeed in starting a profitable business in making new styles for the Audya only.
Rather enjoy what's available or use what you have - but don't shoot those who at least make an effort at it. I intend to have all of the SD7 on my Audya soon. For me, that's at least one thing to be excited about until such time as we can have the next version of the Audya.
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Make sure you'll fly forever!