Start underground. The Nauvis surface is hostile and normal surface construction is forbidden; dig out cave space, use shafts, and build your factory below.
Large total conversion mods.
Transportation of the player, be it vehicles or teleporters.
New ways to deal with enemies, be it attack or defense.
Map generation and terrain modification.
New Ores and resources as well as machines.
More than just chests.
--- Edit: wrong record created by mistake. Delete.
