So here we have the full version! I know I reviewed the VIP of this earlier. I'm glad you made it into a full version!
I still love the melodies, and I like your new additions as well! Even though this could indeed be humanized better (but I know how difficult/time vamping that is without actually playing it), I think it works well as it is too. SoundChris is probably the master of humanizing isntruments. I will note that there is a kind of off sounding velocity drop at approximately 1:20, with kind of a gradual fade, which I felt was perhaps a bit unnecessary. The idea was probably to let it build back into the refrain, but for a solo piano piece, such a feat is difficult to pull of, though not impossible.
I like how you decided to mix two different samples! As you probably know, I've done so in a couple of pieces. That is, In Love with the Wind, and in "A Long Night", in which I actually used soundfonts, since it was for a competition. And I get your struggle! Even if I played it myself on the piano, it sounds like it needs to be humanized, haha. Free piano samples that are good, are not easy to come by :)
Final notes:
I like the new melodies, and the key change at 1:45!
The ending is a bit abrupt, imo, but endings tend to be quite difficult to get right :)
You've still got a really good sense for melodies!
Great job :D