As cool as I'm sure many would think that is, I doubt it would ever happen. I think it's a bit too mature for a theme park. All of the GOT merchandise is marked as "Ages 17+" so they're clearly trying to avoid marketing them to children. Similarly, I'm sure Universal/HBO wouldn't want so many young theme park goers to be exposed to the series. Aside from Terminator, I don't think any of the IP's represented in the parks have R rated movies.
Another thought I had was of the Pacific Rim franchise in the parks. Knowing the first movie did very well in China, I wonder if Univsersal plans to build an attraction in the Beijing park. With the sequel coming out within the next few years and even chatter about an animated series, I do think the IP has a chance in this upcoming third gate. What do you all think?