Okay, this post will contain SPOILERS about the DS9 relaunch series, so if you gotten this far in the thread without realizing that and don't want to know, stop reading now.
I haven't read the DS9 relaunch books so I really developed this design entirely in a "vacuum." When I read that DS9 had been destroyed and was being replaced, my first assumption was that the Bajorans would want to build it or would at least have a heavy hand in its design. It is, essentially, the gateway to the Temple of the Prophets, after all, kind of a big deal to them. At the same time, I wanted to pay some degree of homage to the original DS9, hence the lingering Cardassian elements.
I agree that the asymmetry does give a ship-like sense of motion. What I was really going for, though, was sense of direction,
with the station literally aimed
at the mouth of the wormhole, something you can't do as easily with a symmetrical design.
Anyway, I've probably done as much as I'm going to with this. It was a purely speculative exercise based on an idea that popped into my head before the book description was posted and I needed to let it out. Take it for what it's worth.