I know this has been up for a little while, so I apologize in advance for any repetitions of what other members have said. I can just rarely resist the urge to comment on Bach recordings
IMHO this is overall very good playing, particularly the prelude. Very solid memory too -- I think there's almost nothing harder than to deliver a Bach fugue in public performance. Some specific comments:
Prelude: Overall, your sentiment seems direct and dramatic, which I like. I agree with some of the other posters that it could be clearer in places and perhaps a bit more even, especially on that 16th semitone motif -- but again, overall very solid. One other detail that bothered me was the ending which seemed a bit abrupt. You could perhaps opt for a more "pull in and park" gesture in the penultimate bar -- i.e., an allargando and a more flourishing gesture to end.
Fugue: This convinces me less, though I know it is one of the more difficult fugues in Book I. I agree with you and others that self-conscious highlighting of the subject voices is unnecessary, but here some of the polyphony seems a bit tentative and unsure and could be more forcefully accentuated (for my taste). To my mind, in Bach it's best to always think retention, slightly holding back of the tempo at climactic points in the phrases, to avoid the natural inclination to rush forward, which is such a temptation especially in Bach's music (IMO).
Hope this makes sense -- I don't mean to sound too critical but it's in my nature I guess
I enjoyed listening and good luck on your WTC endeavors!