a few features that i envision for PSN:
- single planet with each faction having a spaceship to launch from and initiate orbital strikes. the ships occasionally move and hover over different continents to switch up planet battles
- seamless transition into atmosphere from space ship and possibly space fights using the flying vehicles
- moons that are opened up for battles occasionally and give you special rewards
- destroyable environment the regenerates over time and random asteroid strikes of varying sizes that leave impact craters and kill anyone in the blast radius
- radical weather during day and night and environment effects such as solar flares, earthquakes, erupting volcanoes that affect your health/armor/abilities
- NPC animals that roam the planet and appear randomly