If you're looking for a reason to revisit Starbound, the latest 1.4 update might be just what you're looking for. The aptly named Bounty Hunter update brings with it numerous procedurally-generated quests that will task you with hunting down the worst scum of the universe, a whole bunch of new monster variants, new mini-dungeons, new furniture, and the list goes on.
You can get a pretty good idea of what all this looks like in-game, as well as what the bounty quests have to offer, through the recently posted trailer. Have a gander:
On the other hand, if you prefer the written word, you can find the full list of changes over at Steam. Alternatively, you could just hop into a game and see all of it in person! The update hasn't added anything too complex or difficult to handle, so if you're feeling adventurous, going in blind could be a pretty fun experience.
Whatever your plans may be, you can learn more about Starbound and its future updates over at the official website.