Adventurer Mode now has fat-lipped, scrawny, straight-haired, and tall goblins for me to not bother learning the names of before I give them blood and iron. Yet Fortress Mode has all of these invading goblins named right down to the lowest and least interesting invader. In addition, visiting merchants and tavern-goers are also named immediately. I kind of don't care about the names of all these raw recruits and pincushions, but a named goblin immediately catches my eye as historically interesting.
I think, at the least, invading characters should have their physical identifiers rather than their names used unless they are notorious persons or have some opportunity to declare their names. Urist McRecruit would be engraved striking down "a skinny goblin" rather than the entirely unknown name. A nameless goblin who slays Urist McRecruit (or slew things off-screen in worldgen) may declare, "I am Snaga Slitthroat, slayer of Urist McRecruit!" or other kill-bragging in the midst of combat, thereafter making him a known character to your fortress. His engravings become named, even retroactively. Additionally, your dwarves declare their prowess to the goblins invading. This may even have the effect of truly intimidating champions striking fear in the hearts of adversaries.
Taken a step further, visitors from merchants, bodyguards and tavern-goers might be nameless until they've had a chance to socialize and speak with passing fortress members. Merchants and bodyguards could duck off briefly for a meal and a drink, as well as chat. With these visitors engaging in conversational mechanics come new opportunities to spread rumors of the world to the civilization screen. Beyond the outpost liaison, merchants from various civilizations can spread noteworthy rumors to your dwarves, telling stories of dragons, wars, succession and new settlements.
Meanwhile, how do we get rumors from captives in cage traps? I'm sure the hammerer can think of a way or twenty, depending on how many fingers and toes our guest values the secret of his civilization's defenses and attack plans. The prisoner's name, the name of powerful warriors, their locations, how many soldiers are at a given site, where artifacts and prisoners are... traction benches are so wonderfully multi-purpose. Eventually you exhaust the prisoner's body mind, and have to retire release the prisoner.
I've been informed torture is off the table for dwarf ethics by word of the Toad. Let me know if that's not the case.