Annoying characters in DS9

Jake Sisko – what was the point of even having this character on the show, he rarely did anything useful. His presence on the show was completely superfluous. His character did not fit in the basic “structure “of the show, and it shows through in the episodes he plays more than a minor role in. Ezri Dax - in the earlier episodes of the seventh season it is not surprising that most of the other main characters have the same reaction to her: “you’re a therapist?” Ezri literally did not know who she was. It seemed as if the entire point of her character was to whine at length about this problem. I was glad she was only on the show for one season.