Excellent idea, I wanna second chapter!
As for Asuna getting together with Negi, it seems likely, except I have a very sneaking suspicion she is Negi's biological sister. Not much other reasons she would be with the thousand master (except maybe if they used the anime's explanation), and she does look just like Nekane, who is Negi's cousin, though he calls her his sister.
I really want to see a second chapter, this story has a lot of promise. :hail: