This no doubt is one of the more unique work you have delivered. The scene looks liek something that would appear on a preview of a new star trek movie, or even be a screengrab from an episode. It's really nice seeing a lot of traffic and movement around the station, as they always looked a bit empty and boring on the screen. The Constitution class clearly takes the main spot and create a sense of importance over the support ships that fill the scene.
New ship designs are a nice addition and the station seems very well designed. What seems missing from the scene is a bit more focus on the lighting, as some of the elements appear to be too bright.
Overall, however, it's a really solid drawing and is an improvement over your previous efforts.