The design is great. I love the equal height bottom cushions rather than a thin and thicker one that some of the other brands have. The kids love the "fries" and "wheel" pillows. The cover material is nice and soft too. Ours took about 24 hours to totally grow to shape but look great now.
The only thing i would change is adding a handle to all pieces. Currently the base cushions are the only ones with handles. Even the small circle pillows would be cool with a handle in the middle. You could use the long skinny ones to play sord and the small round ones as a shield. Just a thought.
The kids have played with this and our new Swedish ladder every day for several weeks now. They talk about it in the car on our way home... parenting win!!!