2 farangi episodes. one about the strike. the other where quark was misdiagnosed. the area 51 episode. personally i hated it. our man bashir. dident liked it all. the quickening. kinda pointless in my opinion. khales sword, i dident hated it but it was kinda pointless. the one episode where they rescue dukat's daughter. may be important, but the episode itself was boring. shattered mirror. dont like any of the mirror universe episodes, that is a partial list. i dident include the ones who were average to me. but just looking at the short synopsis of every episode and mind you, this is first watch. so i cant just go out of order when i know every single episode. my point is. the majority of season 4 is what other would call "filler" obviously its not really filler because there is no real filler in star trek but you get my point. the majority of season 4 are stories who do not have connections to the main arc in any way.
The episodes you listed:
"BAR ASSOCIATION" - Major step in Rom's development, with him ending up going on his own and becoming an engineer. Also the first time Leeta sees Rom in a different light, which leads to them getting married. Worf moving off the station to live on the
Defiant.
"BODY PARTS" - Used Nana Visitor's real life pregnancy in the most imaginative way I've ever seen, which led to her living with the O'Briens for half a season. Illustrates just how nasty Brunt is. Great character episode for Quark. And ends with a scene that best illustrates one of the core philosophies of the franchise. (And why DS9 is the spinoff that best illustrates said core philosophy.)
"LITTLE GREEN MEN" - I'll agree it doesn't really add to the overall stories of DS9, but it was a fun episode.
"OUR MAN BASHIR" - We get a deeper look at Bashir's psychology through Garak. (Plus, Garak himself ALWAYS is worth a watch.) We get another subtle clue of Bashir's genetic enhancements regarding his hand/eye coordination. Plus... an extremely fun episode.
"THE QUICKENING" - Best character episode for Bashir. His arrogance got knocked down a few pegs. Plus, illustrates just how evil the Dominion can get.
"THE SWORD OF KAHLESS" - More Klingon lore is shown here. Also important for Kor, as we see this is his 'last chance for glory', which leads up to his final appearance in season 7. Also illustrates how easily religious iconography can get twisted, even among the best people and intentions.
"INDISCRETION" - Definitely important because it set a number of things in motion: Kasidy and Ben taking the next major step in their relationship, Dukat's fall from grace and his return by ending up joining the Dominion, introduction of Ziyal, first Breen appearance on DS9. Whether it's boring or not is very subjective.
"SHATTERED MIRROR" - I can understand people not liking it simply because of it being in the Mirror Universe. DS9 did have diminishing returns with each trip there. But it did continue the arc of that storyline, whether it is liked or not. Plus it gives full closure for the Siskos regarding Jennifer. (And damn awesome battle sequence with the
Defiant.)
I can keep going with the rest of the season, but I don't think I need to. Season 4 DEFINITELY moved a lot of things and stories and arcs along.
As Donlago pointed out, DS9 might not be the series for you.