On Itkovian's big moment toward the end.
I always really liked Itkovian embracing the T'Lan Imass at the end of MoI. But this time I was a little unhappy with it. Although Erikson does a good job of showing that the Imass are really struggling the entire time, I feel like Itkovian doing it at the worst possible time strategically for the alliance in this book probably runs counter to his acumen as a military commander. Basically I think I could argue he's responsible for most of Gruntle's legion getting massacred, not to mention the Malazans, due to the K'Chain going unrivaled for a while during the battle at Coral. I think Erikson could've done something more to make the need for the embrace more immediate. I even had some ideas, but I forgot them between thinking about this and coming up to actually post it. It's still a really wonderful part of the book.
Also, regarding the end of the book, I feel like MoI has the most well developed epilogue of the series. In some ways, to me, Toll the Hounds feels like it just opens old wounds.