For me the aesthetic quality has improved infinitely!!! I have so much more control over what comes out, and because of this and the convenience I take more and more and more and get so much more practise that they are inevitably going to be much better than they were with film.

I guess publicly - at the top end and the bottom end it hasnt changed much - the best are the best no matter what they were taken on, and the snapshot from Joe Public who isnt really interested in composition, exposure and has everything (if anything at all) printed on auto.
But for the people in the middle who have an interest in getting a good photograph but who arent superb photographers there inevitably has to be improvement due to the increased control and increased practise?