This is not about T4’s specifically. What I would like is to be able to name the “generic” thralls the same way we’re able to do with animals (and chests and other placeables). Whether Archer III or the now-famous Sepermeru “Captain”, I think it would be a neat little thing to be able to do this. It wouldn’t necessarily need to be visible to others, though preferably it would be.
I do seem to remember something about this being asked about or mentioned previously, so I guess I’d just like to suggest it, possibly “again”, to see where we are on this.
Update: As per @Padchi below, have renamed thralls have a small icon or similar, so other players can see it was renamed, and what class it originally was (fighter/archer/bearer/dancer).