Don't get me wrong, I like the Eberron Chicago-style campaign setting pizza. I like how it really celebrates the dungeonpunk asthetic sauce, something that most other campaign settings pizzas will only use sparingly. And the sheer volume of it means that you can truly put whatever game elements toppings you can imagine in there. You want playable robots, goblin bards, and mad-scientists pineapple, anchovies, and ham? Go for it, there's plenty of room!
But the problem is, it's a casserole...not a pizza. A delicious casserole, yes, but it's more like a lasagna than a pizza. And if you're craving pizza or lasagna, you're going to be disappointed.