If possible, I'm looking to have some new hooks added regarding learning blueprints.  A quick glance at the code leans me toward something like one of the following methods inserted at the end of PlayerBlueprints.Unlock (to detect when a player learns a new blueprint):

object OnBlueprintUnlocked(BasePlayer player, ItemDefinition itemDef)
object OnBlueprintUnlocked(ulong userID, ItemDefinition itemDef)

Similarly, at the beginning of the same method:

object CanUnlockBlueprint(ItemDefinition itemDef, ulong userID)

Use OnItemAction, the text will be "study"

Thanks, I will look into that!