The book's main problem is that it wasn't Excalibur, which I think is what people really wanted. It didn't help that it wasn't a book that made Brian feel like anything other than a supporting character despire having half the title.
I don't like Cornell's take on Wisdom. He just feels wrong. He's not the character I remember from 1st volume of Excalibur or even his stint on X-Force. He doesn't even feel like someone who once was that character but has grown. He's more like a Remembered version of the character.
Giving Faiza the codename Excalibur was a mistake (as was her sudden power up). You do not give a team name with a long and cherished history to a complete noob.
Getting Meggan back should have been one of the first priorities of the book. Leaving it this long (and I am grateful that at least she may make it back before the end) I think left a lot of Excalibur fans disappointed/irritated. Abandoning her to the dream corridor on top of deep-sixing Midlands in such an ignominious fashion almost had me dropping the book, and it was was only the promise of Dracula that's kept me interested.