Quote Originally Posted by sbroadbent
As to the Hero units, are there any special requirements, or do you just need to be of the particular faction and train the particular unit during a certain time period? Will just having a basic Tavern be all that is necessary? Will these agents only train in certain provinces?
There are no special requirements. IIRC agents are unusual in appearing immediatly after their "birthdate" as opposed to generals, who wait until they are 16. I suppose this is because agents (apart from princesses) are ageless.

True, that is a use for the Vice Detection. How much does loyalty get affected? This would likewise be useful if you're preparing to bribe a particular unit. It'll make bribing more successful, and most likely at a reduced cost.
The "informants"-line of vices has six levels, and each level reduces loyalty with one, starting at the second level (informants network) so at the sixth level (assasinator) the character has a -5 modifier for loyalty. The fifth and sixth levels (secret assasination and assasinator) also reduce hapiness with a -2 and -4 modifier respectively (this probably means -20 and -40 province loyalty).