My comment doesn't have to do with DS9, but it does have to do with the Ferengi. I didn't think it needed a thread of its own, so here goes.
Wouldn't it have been funny if the two Ferengi who got stuck on the wrong side of the Barzan wormhole in that TNG episode had turned out to be the same two that Voyager found in that one episode where they had convinced the people on one planet that they were gods and were exploiting them?
Considering that the Barzan wormhole was an unstable one, it's plausible that the next time it opened on the Ferengi end in the TNG episode, they could have entered it, trying to get back to the Alpha Quadrant, but ended up in the Delta Quadrant instead. I think it would have been funny had the writers chosen to do it this way.