Crops you plant (even modded ones) will grow faster when it rains, as long as they can see the sky.
Why this isn't a vanilla mechanic, I don't know.
An add-on for Enhanced Celestials, increasing spawns of BIC Mobs
Adds a tough challenge to Enhanced Celestials 2
Adding a new layer to your NeoOrigins experience. Again!
Adds Peaceful versions of some default moons as additional moons for Enhanced Celestials 2