Just been giving PEF a sweaty workout in Reason 13 (of course including all the slick and superbly useful Reason Players such as Bassline Generator, Chord Sequencer, Dual Arpeggio, etc). I'm not trying to compose - just putting Reason's musical MIDI machinery through its paces while I'm on the lookout for useful ideas, phrases and longer progressions. I don't doubt that similar results can be achieved with PEF in Cubase, Ableton, Logic, etc.
If I was a media composer up against a horribly tight timescale in a film or TV contract, by now I'd have a pretty handy basket full of very useful ideas, thanks to PEF, and likely be chomping at the bit to get busy with my "precision" Synchron template.
Look, please let's not get pretentious or overly precious about PEF. Personally I see it as a great utility for most of the popular kinds of orchestral music which predominate in film, TV and other kinds of media scores. Today's AI Large Language Models can write this popular kind of music, but you don't get the creative editorial freedom you have when using your own idea-stimulating sessions like I'm talking about here. And AI still cannot compose serious concert works for orchestra.
Yet in some cases even "Real Composers" might find useful roles for PEF in composing concert-type works. But then again, I'm not supposing PEF was designed for anything other than the potentially far more lucrative and plentiful kind of works intended primarily for media – aside from the pleasure of hobbyists of course.
PEF will no doubt prove itself useful in quite a number of apposite niches.
In any case, bravo VSL! Nice one!