For your first part, that would make sense, except Nidell isn’t supposed to remember anything about Fenna. I don’t know how Sisko would expect her to think of Fenna as something she’d want to become, since she knew nothing about her. That was what made the line weird to me.
For your second part - agree on both actually! I haven’t seen any particular DS9 specific community in here or elsewhere. Maybe we can be the change we want to see, lol. Maybe a new community or a weekly episode discussion or something.