Agree. Us hardcore fans would be disappointed with another Carsland, but I don't think they worry too much about keeping the hardcores happy. We're the idiots that drop money there no matter what they do, and for every one of us that "falls off the wagon" they find two more to replace them.
They should compromise between the hardcore fans and the apathetic ones and try to please everyone in between ... by building lots and lots of high quality rides. With the best theming possible given that the main priority is the rides (and the gift shop if they insist).
I would be very happy with a Radiator Springs Racer ride, and I don't care if the vehicle mechanism resembles Test Track or if the same ride exists elsewhere. I don't care if there is an entire Cars Land, as long as the ride and its immediate surroundings are nicely themed.
I think I'm pretty close to the average (semi-frequent) guest when I say that it's the high-quality rides like Everest, the MK mountains and the better-quality dark rides, and a handful of other top tides at the other parks that keep me coming back. Along with a handful of high-quality shows like Festival of the Lion King and Beauty and the Beast, and one or two high quality, live, open-air musical groups.
Video-screen based rides are not what I call high quality. And I think most people would agree. At least the ones who already own TVs and video game consoles. Anything that is mostly singing or talking audioanimatronics is boring to the average person. Don't deny it ... I've been there and I've seen the looks on the faces of the average guest and heard the comments they make when they're exiting.
The public consensus is ... build more rides like the Mountains, Test Track, Soarin', Pirates, Haunted Mansion, Tower of Terror. Make them big, high capacity, generously long and well themed without taking shortcuts. That's how you fill theme parks in the long term, and sell a lot of high-margin food and souvenirs.