I keep seeing people going back and forth about whether a change is right or wrong, which is indeed subjective. What isn't subjective, however, is general common sense and logic. Here's how attraction idea is "right" or "wrong":
1. What is the mission statement/overall theme of the park you want to place the attraction in? Does it fit this theme? Yes: continue on to number 2. No: Try a different park or start over.
2. Does the attraction fit the theme of the area and not clash with its surroundings? (IE Tomorrowland, Future World, Hollywood Blv. , etc) Yes: It's the right attraction. No: Chose a different area, revise the concept or start over.
3. (For replacement attractions) Is it on par with the previous attraction or better? Does it fix any previous issues if applicable? Does it meet the other two points I made above? If Yes: It's the right replacement. If no: Go back, revise or start over.
Fixed.