Hello furiouzpianist,
First of all, I want to say that I really love this Chaconne and the successful transcription of Busoni.
As for your performance, it's very nice job, I really liked many parts of the piece! It was clear (good for bach), powerful and sweet when needed and you showed it's romantical spirit.
Now, my opinion is that in the beginning (first two pages) of the piece you could add more pedal as well as in other similar parts of the piece. Of course, don't overdo it! You should avoid losing its power and style (baroque), but, at the same, you should keep the emotion, as the piece is written in memory of Bach's first wife. It's an exceptional work!
In addition, I think that you can use more rubato in the opening chords and, also, make them more beautiful. I'm not really explanatory... What I mean is that they are a little bit too straightforward and flat, and they seem to me unrelated to their context, which is nicely expressive.
I'll be back to comment on more(!), but, unfortunately, I don't have enough time to continue at the moment!
Evitaevita
P.S. If you improve some little things, I strongly believe that you could play it in public!