I don't know if they would bring back international food and merch. I imagine it didn't sell the first time, so there isn't much reason to believe it would work this time. Just speculation.
However, there are work arounds. I was at Universal the other day and I noticed how in the Springfield area they had the Kwik-e-Mart. On the outside it was the shop from the show. On the inside it was a typical gift shop. It added to the theme but still served it's functionality. I could see things like that happening.