Escalator to nowhere, Popsicle tower, 50ft magnifying glass

Different people play for different reasons. I agree with your assessment of these three buildings. True, they were only briefly in single episodes. But for the hard core fan, these three buildings are iconic Simpsons. If they had cost an outragous amount of donuts each, I wouldn't have bought them. But for in-game cash, they were worth it to me.

I like your idea of collecting pieces of buildings (or any other item for that matter), similar to what they did with the Mayan calendar. EA, are you listening?