Most anime about the future shoehorn in some sort of "technology can have drawbacks" or "we need to be careful not to lose our humanity" subplots. BNA goes very much in the opposite direction. Can't say too much because that would be spoiling the plot, but BNA is of the opinion that genetic modification is awesome, people should have whatever bodies they want, and being something other than human would be pretty damn cool. Plus, it's animated by Studio Trigger, of *Gurren Lagann*, *Kill la Kill*, *Darling in the Franxx*, and *Little Witch Academia* fame, so there's tons of awesome action shots. (The plot and characters are pretty good too, but frankly that was secondary to my enjoyment.)
If you enjoy transhumanist themes, you will enjoy this anime. If you're a pansy ass luddite, go back to watching your zoetrope.