Speaking of designs and DS9, I briefly mentioned this before, but one of the few things I didn't like about DS9 is how small it felt.
It was 90% the promenade (always a guy selling the same weird looking candy in a stick) + quarks doing 90% of the job of making the place feel like an actual huge sci-fi space station visited by aliens every day. The rest was the generic space ship locations of rooms, bridge, jails, and medical areas. There was an episode with a kinglon fast food restaurant so there is that.
In contrast, I was very impressed with how b5 showed actual CGI trains running around the station, and several locations including many different restaurants, parks for recreation, bars, slums with poor people, markets, areas for engineers, a room for a council, different rooms for each ambassador, etc etc. And that was just me seeing up to early season 2
With the bigger budget, compared to B5, I wish they had been more creative. But still, love the series.