Didn't like this.

It diminishes the sense of accomplishment Sasuke would have gotten from killing Itachi outright, and he had no other objective. I would feel like total shit. I would have been happier if Sasuke had killed Itachi but then died of his wounds shortly after.

When Itachi was first introduced and we learned what he'd done, we didn't understand his motives. Now, here at what appears to be the end, we don't understand his motives. We might never get closure on this, but a dumber outcome would be the discovery of some kind of suicide note written by Itachi. Even worse would be a monologue from Sasuke about "Now I understand." I think a letter to Sasuke would suuuuuuck and would be totally out of character for Itachi.