Oh my! I see you are wearing the RARE albino Bachido shirt! (available in the Bachido Store! - http://bachido.spreadshirt.com/)
I like the consistent snapping on the ichi no ito (something which can tend to be forgotten about). And as you ‘it felt really good when I played it’, it sounded that way. I mean, each time it sounds more and more confident.
Comparing to your last video, I noticeably detect the confidence/intention when checking the ichi no ito portion.
And for the most perspective, let’s look back earlier to your most memorable contribution. 
So, do I notice improvements since your first video? Certainly. Do I notice improvements in your second to last video? Yes, I do. Though the contrast isn’t as obvious as in the beginning, that should be expected.
In my experience, as you get more skill, the difference is more noticeable on the inside than outside (meaning, it will feel better and better though you may not see much difference in playback). Of course, this is a good thing. One day, when you reach a certain point on the inside, it will just flood into your playing to where you’ll see a very noticeable leap in proficiency.
That’s just what I’ve noticed though. The experience might differ depending on the person.