What would I do if I ran the park?
Well, the first thing is probably add special effects to Nitro. I mean like fire, steam, and factory sound effects. That would make the ride perfect. Also, I would agree with some of your ideas, which was to get rid of the que area for The Chiller and put another attraction there. I'm thinking a Haunted Castle walkthrough attraction, with no relation to the original. This attraction would be safer, easier to get through, and less creepy then the original. Although, I would hold off on any construction if I were going bankrupt.