"Groundedness" is rather subjective, I suppose. But I got the sense that they were going for somewhat of a gritty and grounded kind of 'feel' with the JJTrek movies, at least to a certain degree. I mean, people still ride motorcycles and get into bar brawls while drinking Michelob, and they have these petty distinctions between service members and "townies." Earth cities don't look too far removed from what we see today in well developed areas. And starships are full of mechanical stuff that looks like it came from a 20th century brewery or something.
Kor