What feature should GitWorld Engine add next?

I'm planning the next major update for GitWorld Engine and would love some community input.

Current ideas include:

🌙 Day/Night cycle

🌧️ Weather effects

🚗 Moving vehicles

🚂 Trains

🏰 More biome themes

🎮 Additional pixel-art animations

If you were using GitWorld on your GitHub profile, what feature or customization would you most like to see?