Don't underestimate potatoes, how many modern RPGs allow you to do that? Filling your house with potatoes isn't a feature itself, but a possible dynamic resulting from the mechanic that allows you to pick and place an obscene number of types of assets in Skyrim, and that is an admirable feature.
There is a goal for those who want objectives, which is to reach to the center of the universe. Character progression can be conventionally judged by the quality of your hyperdrive/ship and weapon, which limits your jump distance across systems and ability to overcome greater obstacles respectively. In this sense, it's kinda traditional, don't you think?
Lastly, I do think that procedurally-generated planet/system/galaxy is a really neat feature.