Being able to customize my own ship sounds great. I also liked seeing the small glimpses of the more urban environments, even though we never saw how crowded the cities could get, or how the NPCs behaved. Seeing that there were green and blue planets was also exciting, but we didn't really get to see what a lush or wet environment would be like to explore.
I think there's a good chance the urban exploration would be what interests me most, and I still have no idea how much of that will be offered in the game. I worry the planets won't feel as fun to explore as Skyrim, because while I felt Skyrim had something fun to explore in every direction, there's not likely to be much handcrafted content on most of these one thousand planets. But I dunno, maybe Starfield can deliver more dense and interesting environments than No Man's Sky was able to. If so, I'm gonna fucking disappear into those planets.