I think I find this the most attractive one you've posted so far and have transferred it to the CD I keep for permanent listening. In a fashion typical of me I didn't read the post, listened and didn't hear the tune either ! That's just my lack of aural acuity and will surprise no one.
What I did hear was a fascinating tour through a considerable variety of what I would term musical archetypes. I began hearing Ireland, Bridge, Messiaen, Ives and even, at one stage, late Beethoven. This is not in the sense of surface imitation, but because you are couching their favourite archetypes in your own musical terms. To what degree this is intentional, accidental or maybe in my own imagination, matters little. It is rather like looking through a window on a train journey, starting perhaps in a city at night but soon hastening through a clear landscape in which one observes and reobserves significant features.
The fact that you do repeat certain things, for example the descending left hand run and several very poignant changes of harmony - the one around 7:20 is very striking - gives the improvisation an odd sort of coherence and prevents the polyglot randomness which is an easy trap in this type of playing.