I love the world you're creating. Even in the first game, I was sure the lawn sprinklers would turn on one day and we'd have to seek shelter. The ravines already looked like dry riverbeds.
I'd like a weather system. With rain, thunderstorms, storms, hail, wind, and fog (which also puts enemies at a disadvantage). The dry ravines could turn into raging rivers in heavy rain.
Excuse me, what would come next? A meteor shower? – Although, shooting stars, Hoop's reaction to them, and rainbows would certainly be nice.