The Klingon plotline was important to the writers. "We were in the process of realizing how we could change the situation with the Klingons, and essentially bring an end to the Klingon war," says Echevarria. "We wanted to close the chapter on it and get back to what the franchise had been, which was Cardassians and Bajorans. It hadn't occurred to us yet to ask the question, 'What if the Cardassians had joined the Dominion?'"
That's a quotation from the DS9 Companion, talking about what the writers were thinking towards the end of S4 and start of S5.
I was never a huge fan of turning Season 4 into a pointless Klingon war that fizzles out into nothing, but I can see how the writers were hamstringed into doing that by TPTB inserting Worf into the show to boost ratings.
However, despite me not being a huge fan of the Klingon war, I certainly like it a lot more than hearing Bajorans whine about the occupation and/or tell me for the 10 millionth time how the Prophets are gods who always guide them.
In other words, although the Klingon war wasn't spectacular, it was still an improvement over what Echevarria was getting at when he says the show was about "Cardassians and Bajorans".
The truly great episodes of DS9 prior to the Klingon war were character studies, not Bajoran stories. Bajoran stories were in fact IMO a step backwards in quality from the character study episodes that were irrelevant to Bajorans (ie: The Wire, Necessary Evil).
I used to think that it's a shame that DS9 writers wasted Season 4 on a pointless Klingon war, but after reading the Echevarria quotation it made me reconsider. It looks like they may have reverted to back to a lot of lackluster S1 and S2 style Bajoran stories in S4 if TPTB didn't interfere by adding Worf. With that in mind, I'm glad they did a pointless Klingon war instead.
It is also a blessing that they realized to make Cardassia join the Dominion in Season 5 because that too prevented them from reverting back to lackluster S1 and S2 Bajoran stories.
In this thread I am asking you what you prefer: the Klingon war, or S1 and S2 style Bajoran stories?