It had better be a hilly area, preferably mountainous. otherwise, they've doomed F1 in the US once again by hiring Tilke. I certainly don't want to go to a cookie-cutter track to watch F1.
Texas itself is actually a fairly good choice, it's a big state with a big population...a population that loves big engines and absurdly fast cars almost as much as they like their BBQ, guns, and pickup trucks. which is a lot. It's in the middle of the country, in fact it's the only bit in the middle that has some character behind it. (Kansas? South Dakota? I don't think so.)
however, I don't neccesarily think it was the perfect choice. There are far more road racing-happy areas of the country, and areas that have more character, as well as areas with a more concentrated population.