In pathfinder, Monks have a ki pool, much like the 3.5 ninja did. In complete scoundrel there is a feat that allows monk and ninja to stack for unarmed damage and ki pool, but since this was intended for the 3.5 monk which didnt have a ki pool, in the example of how it works it only enhances the ninjas ki pool.
My question is this: knowing that the ninja and monk's ki pools were not DESIGNED to be used together, would it unbalanced to say that if you have taken this feat, you can use your monk ki pool to fuel ninja abilities, and the ninja ki pool to fuel monk abilities?
In pathfinder, Monks have a ki pool, much like the 3.5 ninja did. In complete scoundrel there is a feat that allows monk and ninja to stack for unarmed damage and ki pool, but since this was intended for the 3.5 monk which didnt have a ki pool, in the example of how it works it only enhances the ninjas ki pool.
My question is this: knowing that the ninja and monk's ki pools were not DESIGNED to be used together, would it unbalanced to say that if you have taken this feat, you can use your monk ki pool to fuel ninja abilities, and the ninja ki pool to fuel monk abilities?
I would do it this way. The feat, in addition to the unarmed damage, lets you add your monk levels to your ninja levels for purposes of your ki pool. Both PF monks and CAv ninjas use the same ki pool mechanic. Obviously you would need 4 levels of monk before you can use your ki pool on extra attacks, etc.