Hello Jerry.
Your understanding of APP is clearer than you realize.
"...available at the touch of a MIDI note." Right. And if you record the MIDI note triggering the APP sequence, the sequence plays back live. If you raise the MIDI note up a step, the sequence will also play a step higher, transposing it harmonically or chromatically, depending on the APP setting.
I encourage you to experiment with the patterns that come with APP, build a progression with them, and then record only the trigger notes. When you apply CCs (modulation, etc) to the trigger notes, that will affect the APP patterns.
You observed the need to "transfer each note, one at a time into the Logic Piano Roll." Here's where you're confused. There is no need to do this if your only goal is performance. All Logic (or any DAW) needs are the trigger notes.
BIG CAVEAT: if you want to print out a score, yeah, you'd have to shuttle the notes into Logic before it would appear in Logic's Score.
VSL has suggested that a copy and paste feature will allow that more expeditiously. But this will be a "tough get" as they say in tennis. Because one could conceivably perform a good portion of the open of Beethoven's Fifth with just trigger notes. As we know, that is all built on a four note motive. So you cut and paste the four note motive from APP into Logic? What do you have? Four notes -- nothing near what the trigger notes are playing. And if you notate the trigger notes alone, what do you have? Nothing recognizable as Beethoven's Fifth.
So really what we'd need to notate our APP perfomance is an APP BOUNCE that captures all the MIDI events that APP generates when it is triggered. Then that MIDI capture -- likely a MIDI file -- would be pasted into Arrange, at which time it would appear in Score, Piano Roll, etc.
I do not doubt that the rocket scientists at VSL can do that. I am less certain that they will direct resources to that end.
And this is why Herb stresses that APP is a sketchpad for musical improvisation only. I think they've drawn a line in the sand, for now, at least.
I wrote a cue that went deeply into APP, and quite soon I realized that I would probably never be able to print out the work, as the piece mushroomed with sixteenth note string runs at high tempos, multiplying and compounding over time. But neither could I have conceived or MIDI-performed the piece without APP. I acheived more realism in those runs than I ever had previously, and in one tenth the time.
So the moral is, with our present version of APP, the written transcription of what you are creating will get exponentially more complex and tedious to copy as the piece evolves.
But if performance is the only thing that matters, just the playback, then just record the trigger notes. Many of us trigger an APP running accompaniment of strings and then orchestrate around that within the DAW. It's flat out scary how credible and extended a piece one may write with APP.