Hmmm...that would be interesting. And if they did keep it, it would be nice if they themed the Cinnabon side as a Lard Lad's donut walk up window.
Although part of me was really hoping that it'd be demolished so that, like Chris said, it would really open up the path towards the Studio Tour. The two little corridors on either side of Doc's is simply not big enough for the crowds that will be going to and from the tour (especially since the tour is expecting new animations AND that Potter is in the previous main path)
If it was up to me, one of the things I'd address during the addition of Springfield is improve the Simpson's Ride facade. Currently you see two massive (and very obvious) Omnimax show buildings jutting out, with a blue paint job and some cut outs on the sides. I wish they'd find a way to add more to the show building (and queue) to make it look like Krustyland and not IFT with a cheesy paint job....it hasn't aged well and will look even worse once Potter opens with its lavishly themed land. I know Krustyland is supposed to be cheesy, but the current facade isn't even cheesy, it just looks bad...