One of the biggest missed opportunities in all of DS9. The writers position that "she didn't have any story potential" is baffling to me, there is SO MUCH one could do with a solitary Romulan on the station! She could have had such interesting relationships with Garak, Dax, Quark, Kira, Worf... and Martha Hackett was exceptionally talented at the fairly unique skill of Star Trek Alien Acting. She is Jeffrey Combs or Andrew Robinson level. I would have loved to see what heights she could have taken a recurring antagonist role to (without the significant inhibiting factor of having to channel the work of the Voyager writers room).
I wonder if it was latent writers room sexism that caused them to sail blithely by all this potential. I've also regularly thought what a shame it was that the host following Jadzia HAD to be female, because Kira was their only other regular female character, and they needed more than just the one. It would would have been much more dramatically interesting to follow Jadzia with a male host, and maybe they would have had that option if there was a strong female Romulan already established on the station (and from "In The Pale Moonlight" on, we are really hurting for a continuing Romulan character in the war storytelling).