A real block to moving ahead, when circumstances change, is the tendency to tenaciously hang on to old and cherished but unrealistic ideas. It has been my good fortune to work with advertising agencies during "brainstorming" sessions, attempting to come up with fresh ideas for print and TV ads.
We found that the secret to coming up with fresh and creative new ideas (free of old and cherished concepts) is to say whatever comes to mind (no negative poo-pooing allowed), however wild and ridiculous the idea may seem (in fact this is encouraged). The results obtained by this process have often been absolutely amazing.
So, I have a wild one for you concerning the new airport: Keep the old airport for private aircraft and co-develop a regional airport near Jerome. The costs could be shared with Twin Falls and others. Also, this would be a much less risky venture due to an established clientele.