Well, I can't think of any other futuristic alt modes that I'm in to (e.g. Cybertron jets, etc.) so I do think it has a lot to do with the sloping windshield. I'd add G1 Blurr to the list too, but not Hot Rod. Interestingly, G1 Kup and Blurr's alt modes and simple colorings look like they could be from Animated, where the slight of alt mode I like has seen a resurgence.

As far as G1 fans being turned off, that's just part of the constant that is the rejection of change.

Hey! You kids! Get off my lawn!