An overhaul mod focusing on end-game technologies and moderately increased complexity.
Large total conversion mods.
Transportation of the player, be it vehicles or teleporters.
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.
New Ores and resources as well as machines.
Things related to oil and other fluids.
Related to roboports and logistic robots.
Furnaces, assembling machines, production chains.
Changes to power production and distribution.
More than just chests.
I simply cannot see how to make light oil. When searching for it with FNEI it just sends me in a loop.
Edit: The point is, is it possible to make it easier to look up ingame? Or is that perhaps something the FNEI creater would need to do.
Coal liquefaction (better) or advanced oil processing.