What can I say?! That's absolutely fantastic, thank you.
I'd identified the stop/start rythmic motion as a weakness myself, though this fugue in it's original version suffers from this much less than the other ones I wrote. Your version is definitely stronger, and really shows how I should be looking to revise a work once I have complete draft.
Likewise motivic development. Even I was starting to get bored by the time of the G major entry in my original, and the stretto at the end is much improved by your embellishments, heightening tension, thereby counterbalancing the relaxation inherent in what is the longest passage in the home key in the piece.
Once again, thank you for taking so much time with this.
I'm not convinced by your slightly faster tempo though - I prefer both versions at the original 50 crotchets a minute.