Actually, I think this could be waaaay more frustrating than helpful. It'd probably just end up like the "sit" message where instead of just saying "so-and-so takes a seat" it says "so-and-so takes a seat next to Bob" simply because you had "Bob" targeted on accident and didn't even realize it. Can you imagine how many conversations would be messed up just because you had a person targeted without even realizing?
Over-the-top example:
So-and-so: Hey Fred how's the family?
*unwittingly has Bob targeted*Bob: Uh... I'm not Fred.
So-and-so: Yeah, I know that... But, I'm not talking to you, I'm talking to my buddy Fred.
*Fred stands there blissfully ignorant anyone has even said his name.*So-and-so: So Fred?
Bob: I'm still Bob.
So-and-so: Darn you Bob, I'm not meaning you!
Bob: ...
So-and-so: [Guess you're afk]
Bob: No I'm not.
So-and-so: Gah! Bob, who asked you?!
Bob: You did.
*So-and-so and Bob go on like this for 3 days, 2 hours, 7 minutes, and 33 seconds longer... Fred never hears a thing.*Okay, so it's not exactly realistic but, you get the point.
