We were discussing Dueling Dragons/Dragon Challenge's exposed track and entrance/queue. I thought if you had time you may be interested in sharing your perspective.
Haven't had time to read back, but will try to. Short answer: when IOA was built, Dragons fit well. We have to make choices when dealing with iron - a coaster means a lot of area, which means if you want to theme the coaster itself, and do it properly, $$$. A choice was made that I think worked well back then - theme the coasters themselves, use color and the fiberglass sculpts as part and parcel to the story of the two dragons dueling each other, and do a killer queue, since guests will spend most of their time there, as opposed to being on the ride. I think that was a good choice at the time. The ruined castle entry was very well done. Now, Dragons has lost its identity somewhat, and is completely overshadowed by the absolutely incredible theming that Potter surrounds it with. But it's difficult to fix that - you really can't go back into a coaster track and just build scenic around it on the fly. It takes a lot of time, engineering and money. Then it takes a lot of time and testing. And you have to pray none of your measurements are off or something was fabricated improperly...and anything like this adds a whole new element of risk and safety factors that have to be constantly maintained and monitored.
There are great coasters that incorporate the track into the environment. That's very, very expensive - you are taking an iron ride that isn't cheap, but is generally bought to give the most bang for the buck, and then tripling your cost with scenic and environmental add-on. Even more difficult and expensive to do after the fact. Also, you have to look at the cost benefit for coasters - most people are on them for 2 minutes or less, and they're getting the thrill from the speed, drops, rolls, launch, etc. Adding elaborate scenic that you don't really get a great view of while on the ride isn't the best use of the limited budgets we have for these rides. Which is why Dragons original queue was elaborate - it was more than most any other coaster had done anywhere else, and that's what people would spend time in noticing.
So...my off the cuff comments: when built, great. Now, could be better, but I understand why DC is the way it is.
Yes, Hulk has/had LN2 fx.