David R. George III wrote:
Really, this has always been the case, ever since the final episode of the television series.
Agreed, certainly, on this point. The DS9 novels have always required a different approach. It's also true that we are probably subjecting the DS9 aspect of RBoE to a disproportionate amount of scrutiny given that the focus is largely on the Spock and Romulan Empire plot thread. There was a certain amount of editorial box-checking going on here (now we know where most, if not all of the DS9 characters are in the current timeline) and that's fine. Obviously, it was a necessary part of bringing the DS9-R up to speed with everything else.
That being said, the Sisko storyline strikes me as very poorly conceived for reasons I described above. It could probably be salvaged in a subsequent novel, and I certainly hope it will be.