Less repetitive styles have always been a Lowrey feature starting in the early 80s with the MX1 that chose (I think randomly) from several different patterns that also differed for the dominant, subdominant, 7th. This is explained in the MX1 patent. My old Lowrey Genius G300 also chose randomly from several different patterns. I think that for patterns to be generic, that they cannot be too long; but one can program several similar (but not identical) shorter patterns and choose randomly from them. I cannot imagine that introducing this requires great changes to the style engine. The hard part is writing 3-4 patterns for each variation A-D for Yamaha and Korg arrangers. But in the end having - for example - one generic Miller Big Band - with several randomly chosen, similar patterns for each variation, is better than having several separate styles of one type. Thus, the many-pattern per variation style can be put together (by the style programmers) from various styles that already exist. The only novel aspect is allowing each variation to have a several possible patterns and choosing them randomly. The is, I think, what Lowrey does with the styles (but not the FX or fill bar); but note that they do not have 4 variations per style, only 2.

Keep safe.

Sam