You know, they have been getting into more Arya, and some Sansa in this book as well, so is it just because there isn't any Jon Snow in A Feast for Crows that has people have grumbling over it? I think it's a good book, I don't find it slow nor too many new characters, but then again maybe reading multiple Wheel of Time books gave me a better appreciation for what slow, plodding and numerous side characters can be.
Spoiler question....