I dont think That ady will add even the slightest indication of PT stuff to the flawless ESB for the sake of it (:P)
The whole theory of in your face effects or the movie needs to talk to you or adding something to story are not for revisited. otherwise many other great ideas were in place :P
Im aware the wall color if should be grayier. Imp mentioned that ady did make a reference about that change but i cant recall.
Sorry for the misplaced idea about bingo and monro :P
-Angel