I'm not totally against that idea. I think both of those attractions need an upgrade anyways. My two concerns with that idea though is:
1) I don't see the sense of two Wreck-it-Ralph attractions, especially not in the same area.
2) Although the movie brings several interesting ride concepts to the table, a big part of me doesn't see the movie as that big of a deal. When you translate that opinion of mine to an attraction, I don't see the long-term viability of it. Just my opinion.