Visit the frozen mountains of planet Paracelsin, where mining zinc is a race against clogging and freezing.
Mods introducing new content into the game.
New places to build more factories.
Augmented or new ways of transporting materials - belts, inserters, pipes!
Map generation and terrain modification.
New Ores and resources as well as machines.
Things related to oil and other fluids.
Furnaces, assembling machines, production chains.
New menu simulations should be made wider because you can see "backstage" (sandbox entities) when played on wide screens.