It was ok at first, but got very repetitive. Just go harvest planets that are close to Earth for a little bit, return to Earth to refuel, give whatever you harvested to the aliens, rinse and repeat. If I missed something that led to some plot progression then I'll go back and replay the game, but from what I could see so far it didn't seem like it was heading anywhere and I would definitely recommend incorporating more plot if you want to expand on the current game.