It's probably the WotC D&D book I have been the least excited about since the Hero Builder's Guide.
I mean, PrC? I have enough already, and I'm past the point where I tend to ignores most of them anyway, relying on custom-made world-specific PrC.
Combat feats? Likewise, I have more than the whole gaming group will probably ever use. I mean, it's fun to get new material that will never be used, but whatever.
Rule clarifications? I've pretty much understood everything fine enough. And besides, I tend to house-rule stuff.
Tactical and strategical advices? Man, I get that already just from browsing forums like this one.
Powergaming and optimization tips? Honestly, I've no use for it. I give precedence to the interest of the concept. And everybody has strong enough powergaming instincts anyway.
Pretty pictures? Well... I doubt it muchly. With the exception of the prestigious Draconomicon, art quality has declined in WotC products; especially for rule stuff like this.