The Bajoran Wormhole needs to be completely redone. It's so far off model from the show, I'm surprised it was ever accepted to go live. It looks awful.
They need to throw it out and do the art from scratch, a lot more faithfully.
The outside's not too bad; the inside, though, looks nothing like what we see in the show (it looks more like a rehash of the Hirogen wormhole trap (or vice versa) during one of the Romulan Sectors missions).
DS9 also needs some interior remodelling; and the lights need to be turned up (seriously, the Promenade was never that dark unless the story took place during the Cardassian Occupation).