I recently watched "Inter Arma Silent Leges," and came across something interesting- a possible Lwaxana Troi sighting, in fact. Her alleged appearance occurs shortly after Bashir arrives on Romulus, and the Federation delegation has gathered for a reception. As the scene unfolds, a woman who bears a striking resemblance to Troi can be seen walking behind Bashir, a glass in her right hand. There's no mention of an appearance- uncredited, or otherwise- by Majel Barrett in this episode, but I do wonder if the writers intended to place Lwaxana on Romulus for their amusement, and for ours.