So far, we have the convenience, in most stories, of every being average height to humans. Easier to make costumes/models etc. But it'd be fun in this game, or another, to be up against huge or tiny beings. We may have been rodents to dinosaurs but not insects. It's highly unlikely we'd be the same size as aliens from worlds of different gravities. Along the lines of even the Zentradi...humanoids, but big. Also, how wild it is playing things like Agar or Slither . io and how things change with size. ED does have a bit of that with how ships are. Just one pilot, but from a Sidey to T-9...awesome.
p.s. starting to watch Foundation, but have yet to read any of that.