I have never used the doors for the same reasons but I thought Mozenrath1 said it wouldn't handle all the trigger areas to put them all in the same box.
I can try to put them all in one box and see how it goes... This would exclude any terrains that were in 1.0 that didn't make it into 2.0 though...
Do you know what tracks / plant sets are supposed to go with the "Sports Fan" and "Toy Box" terrains?
I used the ESPN Road for Sports Fan which orphans the X-Games Road. There are a few other track designs I couldn't pin down so I might make a separate area for those tracks. For Sports fan trees, I used the "City Park" tree set and for the Toy Box I used the "Construction" tree set. I thought the City Park trees looked better with the Sports Fan Grass.
There are three tracks I don't have terrains for: X-Games, Basic and Slot car.