It's possible but very hard to do considering how you'd have to insert a reason for gordon gaining fifty pounds, batman lossing 2ft in height (grr.. still love ya keaton), changing eye color, etc... the list just keeps piling up. It'd be a lot of work just to see what'd be like.

What id be interested in is a more year-one accurate version, if that's possible. Insert anything deleted (especially scarecrow stuff). Make the wayne's death more cinematic, you know, really drawn out for full dramatic effect instead of a quick *pop* *Pop* mom's dead, dad tells son one of the movie's themes, then dies unconvincingly- eh, needless to say, it didn't work for me. Give bruce's mom a character maybe, cut out Robin, the little cute kid that gave it a sort-of rip-off of hellboy feel... slice out scarecrow's shaming by joey. Little things like that I'd do if I could.