TL;DR
Add "Random" option to Frequency, Size, and Richness at Map Generator.What ?
Add more Randomness to the map generated.Why ?
After 800 hours of play (average 20-40 hours per game), I found Factorio kind lack of randomness: you know it well before landing that the planet has rich iron or large body of water. The survival/building plan has been set before explore. It's really fun to build a huge automated factory and fight dangerous enemies, but the gameplay has become a routine. "Random" option in map generator is quite common in 4X games and shouldn't be too difficult to add. Hope we can see it in the future patch soon.By the way, it's highly appreciated if there's any way to add randomness in the game. For example the Armageddon (nice little disasters) mod brings random invasion from time to time which makes the game more challenging and unpredictable.
It might also be fun if player has to travel a long way to a specified location to buy loot box with in game transaction to get secret weapon/skin/technology.