hmm, Shonuff seems like you want them Soldier types to have all the fun. Some very valid points have been made in this discussion so far, I'll add my $0.18 worth. :wink:
First, I"ll give an example of a feint that a Thief performs against a soldier, making them equal levels and all rolls being 10, with thief in Leather Jerkin armed with just a poniard (SA style weap) and the Soldier in Breastplate and Mail hauberk armed with a halberd. The scenario, the thief is slipping away with the Crown of Nemedia, when he takes a wrong turn and comes upon a Palace guard at his post (10' square room overlooking the inner courtyard with a bell in the center of the room.). The thief will win initiative, so he can try to Bluff his way through this, or simply attack, both parties are surprised the first round so each will only get partial actions the first round. Not surprisingly he attacks, catching the soldier while he is still spinning around, however unless the thief is 7th or higher, the finesse attack doesn't find a weak spot in the armour, so for any damage to get through the DR the thief would have to be at least 3rd level, however if the thief was of 9th level or higher average damage makes the soldier make a massive damage save.
Assuming the soldier survives he rings the bell and attacks, automatically penetrating the jerkin with any hit. Now if the thief survives this hit, he can feint, making it seem as if the blow had almost took him to his knees, while falling forward and bringing his poniard into the soldier's groin.... Rinse and repeat for four rounds, if the thief hasn't either killed the guard or ran away, the other guards will have him trapped.
Single thieves rely on feint to be able to deal damage, dual thieves rely on flanking. Feinting is a good tactic in the right situation, but even with taking the DV to 10 it is not anymore overpowering then a power attacking full attack with a two handed weapon.