Call me contrarian, but I didn't especially like Eddington, or his storyline, and I liked the Dominion War even less. What ever happened to the whole "crossroads in space, with new life and new civilizations seeking us out" concept?
I think the Wadi put rest to that, unfortunately. It's not the best episode and I doubt the original budget would have helped it beyond a certain point, but it's definitely very much underrated no matter which way one can look at it.
It also led to some reasoned reviews, like this one: