If Wynn is not Kazan?
Since I read:
"The director in the commentary says that they're not the same character. Showing Wynn in the end as a savant is an indication that Kazan was also at some point an "employee" of the cube."
So why use a nearly identical script to show Wynn in the cube being discovered by three people who were very similar but very different from the people in the first.
Examples are: Black lady does and says nearly word for word what the doc lady in the first did and said. Even when he began to hit his head on the wall she walked over and put her hand in between and said the same EXACT thing as the doc in the first. Young blonde girl freaks out and gets angery just like the black man in the first about the prospect of now having to babysit the slow guy, while also physically representing the young math girl from the first.
Basically if the director was trying to represent a completly different charactor then why use the same script from the same scene in the first movie? Sure, show the savant with similer manerisms, but drastically change that of the reactions of other charactors to him. Or better yet make him one in the same person and show him picking a shirt off a dead guy in the cube from the original that has Kazan written on it, or something to explain the name change..