If I was to do an edit of the whole saga I wouldn't add PT music to the OT. I would add OT music to the PT. I would replace CGI ships with scale models and I would colour correct the films to look like the pre SE OT.
Of course I have nothing against your ideas but it is absolutely clear that the majority of the members on this site dislike the prequels. I think they have some potential.
I do from time to time get a horrible headache thinking of how to make them as good as the OT.