Younger guys like me would love to see a "modern" design Mustang.
Look, I agree with ya'll about the rear - it's too much of a homage and not enough modernity.
The front, on the other hand, is exactly what everyone is asking for. It's modern, it'll age well, and IMO, looks really, REALLY good.
I'm a younger guy (younger than you, 1TSX), and I think the front end is the modern design that we want. The rear is a little bit of a step back from the previous generation's.
...but I don't think that the C7 will age all that well, IMO. It's a little bit cartoonish and lacks the simplicity, which the Mustang has. This Mustang may not excite, but it won't look 'old', either, in 10 years.