This file here is not recorded midi patterns, you don't have 6+GB of just recorded single notes, version 1 GB was not that big as there was no sample set with it to allow single notes:
[Linked Image - Only viewable when logged in]

The first UJAM never had a sample set as I have mentioned, they were actual real playing as stated on their website "phrases", then the sample set was added to the next version. Midi drag n drop phrases were also added in the next version to give the same notes as the audio phrases.
This is what sets them apart from EZDrummer, EZBass or EZKeys midi phrases that trigger sample notes.

"BiaB is much more complex that a typical VSTi such as those by UJAM."
Why are you using this UJAM VST, why are you creating tracks with different phrases playing or single notes ? I thought you could only do that in a complexed Biab exe ?

I made sample set with slides, vibrato etc... PG just made simple SFZ's for their RealTracks. I suggested to have the same guitar each time recorded in Direct Input to allow the same sample set to be used rather than have so many different SFZ's for each different sounding guitar, you could that have one decent sampler with articulations.
Where have you guys been ? I have been posting all this stuff for years in the forum, showing working examples of it all.