Trading system greatly improved. Buy and sell prices are now different for trading goods. Difference between them is dependent on your relationship with the faction or star system you are trading with. You will typically get much better prices at star systems you own.
Ability to color star map based on price of different resources.
Rebalanced how weapon modifiers (like Spray, Oct, Sniper, Overcharged) affect power level and price. Tri, Pent, and Oct weapons should now be priced accurately (cheaper than before).
Waves should no longer spawn very close to the player, or on top of a planet.
Button in Star Map to automatically travel to selected star system.