Tim , there are around 1,700 Roland styles[not conversions] available...
Roland revamps or creates styles for each new model as needed..I don't think it is necessary for the primary company[Roland, yamaha etc.] to create styles other than what they intend to use in a current model..

There are third party companies doing this, and with conversion software...we already have more then we can possibly use...My library is approaching 20,000 styles..

Besides , Roland gives you the tools with the high end keyboards, to create / modify the onboard styles...As an example , the G70 can modify styles with "song/style tools"..

Tim, even your KR7, can alter styles with in the board itself...It is like the VA7 in this area...Right?