If Disney had the space, somewhere, anywhere, even remotely close to Critter Country, I'd love to see a Cirques Du Soleil type show, based on the Fireflies in "The Princess and the Frog".
The show would keep all of the aspects its brothers and sisters would; acrobats, trapeze artists, and everything else that makes those shows so thrilling. But, their costumes would be lit up, showing the firefly aspect of the show.
The stage would be dimly lit, so that the audience could appreciate what the acrobats are doing (and not just seeing yellow lights flying across the stage), while keeping thee amazing light show.
The show would follow the stages of a firefly's life in this case Roy (from the Princess and the Frog) the firefly's life.
Keeping with the whimsy of Disney, the show would be emceed by a witty, cajun firefly, Roy's son Jerome.
I think this could add wonder for young audiences, and a more mature aspect to Disneyland for adults coming to the park without kids.