At the time Enterprise premiered, the franchise was getting tired. A prequel wasn't a bad idea, but it felt like a prequel to TNG instead of the original series. Klingons with ridges were the first thing I remember hearing bitching about. That "damned song" also didn't help, and fans were also turned off by "Star Trek" missing from the title. It wasn't a true prequel and didn't offer much new. I think, seeing it with different eyes, it works better today. But I still feel Bakula is lacking a certain energy.