You weren't crashed into planet, you came well prepared. Start a game like a nepo baby.
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
Augmented or new ways of transporting materials - belts, inserters, pipes!
Trains are great, but what if they could do even more?
New ways to deal with enemies, be it attack or defense.
Armors or armor equipment.
Changes to the player's in-game appearance.
Things related to oil and other fluids.
Related to roboports and logistic robots.
Entities which interact with the circuit network.
Furnaces, assembling machines, production chains.
Changes to power production and distribution.
More than just chests.
Play it your way.