I don't know about you, but every single build I've worked on sooner or later runs into a very simple problem: lack of feats.
This is the power of the fighter: where the wizard and cleric get their spells and the rogue gets his skills, the fighter gets feats.
While there are appearent 'no-brainers' like Power Attack and Cleave, the same two feats could have gone elsewhere.
Where a wizard might focus his spells into a specific school or element, the fighter can focus on mobile fighting (spring attack), protective fighting (improved disarm) and/or fighting large crowds (greater cleave)
True, without even looking I can predict the Warblade will probably be more interesting (without making an effort to search for those brilliant feat-combinations the fighter might have) and maybe even more powerfull (since
WotC has made it a habit to increase the power of their classes/prc's/feats/spells with every new splatbook they publish)
That doesn't mean you can't make the fighter interesting. But, because it is such a versatile class, you have to look for that interesting combination of feats yourself. It's not hardcoded into the class. Just as wizards have to look for their favorite spells, and rogues have to determine where to focus their skillpoints....