This definitely sounds like a great way of plussing the area, and really making it a better section of the park. However... Part of me is wondering if there's space for puppeteers to wander around at night, and there's probably going to be a problem with outdoor animatronics, though the puppets and animatronics would probably be ok to bring out during the day on a cart, with "rangers" teaching individuals about the native wildlife.
The light show giving the story, I honestly think that'd be a great idea, but I can see the big problem here being traffic, because after World of Color, and during the summer, the traffic flowing through Grizzly Peak can get a bit crowded, even with the fairly large walkway that people have to walk through the land. Combine that with a light show that happens after World of Color, and it could effectively make it near-impossible for individuals to walk through the area. Even if it only lasted 5-10 minutes, that would pretty much make it so Disney would need to run crowd control CMs around the area.
Overall though, these are great ideas that would really give a lot more spirit to the Grizzly Peak section of the park, the problem is I'm just not sure there's enough space in the land to make some of it feasible (considering the Grand Californian effectively land-locking the area)
I like the thought of finding ways to plus Grizzly Peak, but with WoC already running nightly near closing, would it be that good of an idea to run nighttime events so close? Also you have to consider the hotel which directly borders the land. At least with WoC, there's a berm of buildings that does a decent job of softening any noise.
Honestly, I think the only realistic way to plus the land would be to add some more rides to the area (which would also probably necessitate shutting down the entire area, but still). As much as I like the idea of RCCC, it occupies a large plot of land that could be better utilized. They could also add a second ride into Grizzly Peak if they really wanted to.
I like your ideas. I tend to avoid the Grizzly Peak area at night so maybe it would get me to go there. There's been a complaint over the years that GRR doesn't have enough theming so it would be good to add something.
Since that area is supposed to look like the Sierra Nevada mountains, with the gray granite, trees, water and the Grand Californian modeled after the Ahwahnee in Yosemite, I'd like to see them do a miniature re-creation of the famous firefall which was done off of Glacier Point at Yosemite from 1872 to 1968. Even if it was just simulated and not actual fire.