I think we're talking two difference things.
Changing the core gameplay to something that does not work well, and half-assing the perceived story, plus come up with some of the most ridiculous "weapons", (come on, Fatman? Shooting fucking teddy bears?)
The intro is more a creative aspect, and why not show how you CAN be creative, with something so simple? How is that showing your "advancing" the series, if you can't be creative with your intro?
I think this is a situation where we're going to have to agree to disagree.