If anything, more than the scanner.. it's the camera's refinement that makes this a must have. The rest of it I would lose no sleep over. 64bit architecture and the Motion co-processor included. For all i care, the health app could track my sleeping habits and i could care less.. forget about the walking jogging and other crap.
In the end, you have to look beyond this current phase. It was a no brainer for Apple to maximize returns on the iPhone 5's platform and manufacturing process. Having realised that they missed the boat on screen sizes with the 5, they were not about to commit further missteps by going for a new assembly all over again in a "Tock" release cycle. So while they've brought the fingerprint scanner to the light of day, they managed to do it without altering the fabrication aspect too much to be of concern for them and it allowed them to push the base laid by the 5 even further and maximize returns on the platform.
What's really interesting is what comes next.. and that's when I'll put my money back to Apple. They will undoubtedly come with a larger phone next year and one which will have radically more features or innovations as they love to call it, and that my friends is when they'll take the fight back to Samsung. It's a no brainer that they've been stung hard by realizing they've dropped the ball as far as screen sizes and battery life is concerned - both being limited severely by the form size of 4" that they chose to stay with.
So all in all, the 5S is the culmination of 2 tough years for Apple. But what comes next promises to be something truly special and that's what the Android brigade will really have to be careful about