Using the LFO in step mode to actively modulate the Phrases is the closest you can come to this. I posted about this not to long back. It’s fiddly to do but eventually does yield interesting results.
I’ve wanted to do my homework, and create some sort of database of the internal Waves and Phrases. The Waves could get grouped by spectral content. Not sure how to classify the Phrases. Think of those 2-D maps of blobs that show a positional relationship between abstract things.
Have fun.
ADDED : Also check out a later post in the regular thread where i discover you can change the Phrase length to wonderful affect. Really short phrases are now my thing.