I'm sorry, Abacus, but I don't believe this to be the answer. There is just something about a style that is created specifically for the sounds in a particular arranger that cannot be achieved with a translation (which a generic style format would mean ALL the styles were 'translations'!

Take a listen to how you yourself adjust your playing to different versions of the same sound, then realize this is what the great style makers are doing, also. What they played works BEST on the sound they heard when they played it (if it is any good in the first place)....

Multi-layer drumkit sounds is even more critical for this issue. The drummer (or programmer) programmed the part JUST SO, so that the accents and dynamics work perfectly. Put that in another keyboard, with a different kit and layers that change in different places (if at all), and suddenly you have a TOTALLY different performance.

Sorry, but a standard style format works no better than GS, XG or GM. Sure, it'll stop a tuba playing a bass guitar part, but it never reflects the EXACT intention of the composer until played on the EXACT same gear...