I have just finished reading it and...hmm...honestly, I didnt like it.
I found the B'Elanna/Miral/Klingon stuff to be uninteresting and dull, I also found B'Elanna's reaction to that situation and how to deal with the consequences to be over the top and not really necessary.
I cant say that Chakotay's problems were all that enjoyable to read, but then I have never cared for him as a character so that doesn taint my impression, and the counselor character, Cambridge, annoyed me to no end, and not in an "he's supposed to be annoying and I love it" way, just an a "this guys an abrasive dick" kind of way.
I am interested in the idea of the Federation sending an exploration fleet to the Delta Quadrant though. However I didnt find the Admiral character (the one joining the fleet) to be likeable, and the "revelation" of Captain Eden at the end seemed a bit of a forced for want of a better word.
All in all, I am afraid the book just bored me and I found it a hard slog to get to the end. On more than one occasion I nearly just put it on the shelf to forget about.