Combined conditions on trigs. E.g. !PRE and 50% (say) on one trig. Meaning “if the previous condition was a true, don’t play, otherwise go to the next part of the condition and work out play or not on 50% probability”
Actually, probability may be a bad example, could possibly be done with track chance (on the models at least)
This looks like a big upheaval in the UI to me so I wouldn’t be surprised to find it was a feature for next hardware revision. OTOH all the digis got song mode so 