Yes, as I was making my single image of the credits, I did notice the warp effect (probably lens distortion similar to that in the SW logo pullback and crawl). At that point I gave up on that idea.
I agree that the warping doesn't need to be simulated. I understand that you were trying to get it to sync up, I'd just suggest trying to make it look a little less obvious if at all possible...
And yes, the MPAA logo does fade out midway. In the "opening day" credit roll, it fades out even earlier, and a little faster too. In both cases, original prints had the MPAA rating graphic where video releases have a long period of black.