The Thunderbird is a property I've never paid much attention to, for no particular reason.  I wasn't offended by it's Native American theme, that's not really my style.  That being said, I will say the theme was about as interesting to me as the cowboy motif at the El Rancho or the Last Frontier.  Being a child of technology, harkening back to a day when it didn't have anything isn't my idea of a vacation, it sounds like torture.  One of the most fascinating things about Las Vegas is its unique ability to take things I normally wouldn't find interesting and make them appealing.  The Thunderbird might be the perfect example of that phenomenon.