StreamOfTheSky
Adventurer
Perfect Strike basically gives you two rolls to confirm the crit at level 10, so I guess it does improve the odds. Before that, I'd say it reduces the chances of critting, because when you roll both dice and one is a crit, you have to use the other for the confirmation. If there was an actual good chance of both dice coming out high, you wouldn't need the ability in the first place. Then again, my view of luck and random chance often doesn't agree with the way things are supposed to be.
Again though, Imp. Crit at level 10-11, Critical Focus at 11 or 13, and then the actual pay dirt feat, one of the Crit feats, at 13 to 15... On a weapon that's only threatening 10% of the time... Versus (if we're assuming levels that high) getting Stunning Fist at 11 and I don't know...Touch of Serenity at 13, Punishing Kick at 15, etc...? Sure, you don't get Ki Focus (bow) as a class feature until a little past that, but you have a very high wisdom so those can still be handy with unarmed. And AFAIK, you could just pay for Ki Focus on your bow until then. Each of those (monk level) / day seems more generally useful still... And cooler.
Again though, Imp. Crit at level 10-11, Critical Focus at 11 or 13, and then the actual pay dirt feat, one of the Crit feats, at 13 to 15... On a weapon that's only threatening 10% of the time... Versus (if we're assuming levels that high) getting Stunning Fist at 11 and I don't know...Touch of Serenity at 13, Punishing Kick at 15, etc...? Sure, you don't get Ki Focus (bow) as a class feature until a little past that, but you have a very high wisdom so those can still be handy with unarmed. And AFAIK, you could just pay for Ki Focus on your bow until then. Each of those (monk level) / day seems more generally useful still... And cooler.