Some players might think that if we explored the entire galaxy or if we finished all the missions in it, or even the if we reached supreme admiral of the UHF fleet, the game is over, I mean nothing to do in this game, so, we can defend other galaxies like Andromeda galaxy, Canis Major dwarf galaxy, The large and small Magellanic Clouds, Triangulum galaxy and so on, How do we go to these galaxies, When we reach tier 99 or if we explored Milky way galaxy, we can access these galaxies, as a bonus, every galaxy has a medal, example: you explored 100% of Andromeda galaxy, so you get a medal for accomplishing this, and every galaxy has some secrets, like special suns (Stars), special planets, and more to explore, I wonder why there is no Earth and Sun in Milky Way Galaxy in CIU, I hope this get added one day, not to mention, but we can play special new different missions in those other galaxies, that will encourage many players to play the game more often and many players can come back.
Hope you add this as an idea in the game, InterAction Studios.