I'm thinking of porting over some Bo9S maneuvers as ki powers, so some of the exotic flavor of Bo9S could port into my Kaidan: a Japanese Ghost Story setting, under development at Rite Publishing. Now I don't want to bring the whole thing in, just some elements.
In my setting I have at least two Ki based classes: the samurai and the monk, several prestige classes, so far including the ninja are also ki based classes.
Looking at the Bo9S Crusader, I'm not too keen on Steely Resolve, but I do like Furious Counterstrike, and thinking of making Counterstrike a samurai ki power, also Smite (cut and paste from Bo9S) as another.
I have Ki Armor for ninja that should be available to the Samurai, which grants a AC bonus based on WIS bonus that lasts for a number of rounds equal to WIS score.
Also Puissant Strike which grants WIS bonus to attack and damage.
Battle Clarity, Battle Cunning and Battle Skill from the Bo9S looks like they too could be ported over as ki powers, then I'll look to the Bo9S tactical feats to see what else could be ported over.
Other than that, that's all I'd bring into PF.
Edit: the tactical feats are too complicated, so I won't include them. Of the regular feats I only like Evasive Reflexes (grant an immediate 5' step, when given an AoO), and Snap Kick - a bonus unarmed attack at -2 Hit. Now I'll look through the maneuvers to see if anything can be converted into a feat or ki power.
GP