That wouldn't have been too tricky to pull off with a double and a little CG, would it?
The Joker's presence dominated The Dark Knight, and thus, the overall trilogy's story-line. To completely ignore him in the conclusion was jarring, and even more-so because of how big of a role everyone else had. I understand the hesitancy to recast him after an great performance and untimely death, but to not even mention or reference his character at all felt a tad silly to me when they were referencing almost everyone and everything else in the franchise. I don't get how it's supposed to be an insult to acknowledge his impact on the franchise with some flashbacks or anything. Maybe someday though, someone will 'George Lucas' him and this scene into a special edition of the movie (along with Maggie Gyllenhaal into Batman Begins?) or remove the copious references to Ra's Al Ghul and Harvey Dent. I'd enjoy that.
