I was tempted just to say "nope" and leave it at that.
I liked Keiko and the family aspect she brought to DS9, though it was a little underused (IMHO). Sometimes married couples (when one has to move thanks to the others job, etc) to argue and gripe, nag and moan at each other. Such is life.
She did help to show Miles just as the 'everyman', with a wife he loves (and has a normal relationship with) kids and a life away from his job.