i think some of your coaster designs are a bit too "crazy" and unorganised. although i dont know if you were tyrying to be realistic.
also, i think you need to add some more variation to your buildings, they all look very bland.
Air, because it is the only one i have ridden, and by the looks/reviews of all the other ones, it tries to give the best flying sensation, not themost intense ride.
im kinda pissed that it is gnna be a launched coaster...
although i guess the only other type of itamin it could be would be a hyper, and that would be kinda dumb, seeing as MF is right next to it.