Example: Amazing Earl's Swinger
should be considered a covered ride when it's raining, and shouldn't have as high of a nausea rating as the Twist, and his Sky Diver:
should have much higher excitement/intensity/nausea ratings than the Ferris Wheel.
Even if it wouldn't be the best for testing out go-kart tracks and mini-golf courses, I think it would be nice to change the roller coaster designer to support all tracked rides.