I think as they add more planets( an obvious direction that they'll have to take with future content assuming there is truly a 10 year plan). This will be remedied. The Cosmodrome is still wicked easy with a high level character but we should see 3000 damage when we pop their heads off with a hand cannon. However, its an easy assumption there will be a level 30 planet just like Mars is a level 18 planet currently.