I have a couple ideas that could make the game more interesting for people with a hunger for automatizing everything and making it self-functioning
1.- A pipe-like thing ( or just the wire in game ) capable of moving the water from the rain collectors into the base water tanks
2.- Focusing on survival, a thirst meter that depletes continously and makes you weaker the lower it is
3.- Water needed to be purified with fire or an advanced purifier
4.- A event ( like the sandstorm ) called "Radiation Rain", wich does damage when you go out the base
That's all for me, i'll think in other ideas later.