Highly customizable overhaul. Add lithium battery to the science pack and a whole new production chain to endgame. Unlock powerful items and a new tier of equipments.
Large total conversion mods.
New places to build more factories.
Armors or armor equipment.
Things related to oil and other fluids.
Furnaces, assembling machines, production chains.
Changes to power production and distribution.
Hight-entropy alloy should be craftable in the arc furnace.
Please take a look to this discussion. For now I don't plan to change it. https://mods.factorio.com/mod/LithiumBattery/discussion/6a8acb35a99a42fbdef8fc09
I'll consider it in the next big update...