I just wish we had a Kirsten M. Beyer for DS9. Someone who loved and studied the show like she did for Voyager novels. I haven't recognized the DS9 characters since the Soul Key.
Because the characters went through 5 years in between Soul Key and the TP pact novels. A lot happens to people in 5 years. I'm not the same man I was 5 years ago, most people aren't. To expect these characters to remain stationary and not change at all is unrealistic at best.
And I love what Kirsten did with VOY, but if you look at how many of the characters' little mannerism are put in the novels by DRGIII (Odo's typical crossing of his arms and rubbing his chin for example) it's clear that this man understands and knows this people. The littl conversation between O'Brien and Nog, in RtD... it could hear Colm and Aron in my head, see Nog's grin on his face while he was trying to get under O'Brien's skin. Amazing.