I get the Kraft Mac & Cheese every once in a while. I typically like to add some little smokies or bacon to it. It is usually served due to popular demand by my grandchildren. My guess is that despite the skepticism here, the pumpkin spice version most likely tastes great. They do not release these things unless they are tested and reviewed by actual people. Usually the recipes are submitted by people who have kids or grandkids like ours who are all finicky eaters.
I used to product test it a long while ago, so every once in a while I buy it. My preferred recipe involves shredded cheddar, heavy whipping cream, butter, salt and mustard powder. The kids will argue over barilla elbows (they have lines like rigatoni) and cellentani when I make it.