I just wanted to address that the knowledge skill (or it's use in game) may need some reworking. I worry about backwards compatibility in changing the skill, all of my players have always found that rolling knowledge as an impulse to see whether or not they know something about it is ridiculous. Granted, there needs to be a way to handle this with an in game system, but the only thing I've managed to come up with on my own to make this a bit more ...acceptable... (I'm having some difficulty with my vocabulary at the moment) is to simply provide good circumstance bonuses if I know the PC in question has studied/encountered/experienced whatever is in front of them in the past (whether in character background or earlier in our campaign).
That's how my players feel at least. I don't mind too much as long as I'm making the checks secretly but I was curious whether or not there were other reservations about the Knowledge system.
Another example is say...the knowledge (local) skill. Which should seem completely moot when the PC changes locations from which they are familiar with this skill. Perhaps you could take knowledge (local) multiple times depending on the region or whatnot....
In any case, We'd like to see some discussion over the quirks of the knowledge skill and perhaps the possibility of a better system to facilitate character knowledge...