The Final Problem

Henry: There’s a couple of words, it’s what I keep seeing. Liberty.

John: Liberty?

Henry: Liberty. And… In. It’s just that. Have you finished?

John: Hm. Mean anything to you?

Sherlock: Liberty in death, isn’t that the expression? The only true freedom.

I definitely remember noticing that line when the episode first aired. I think we were all on edge about death references at the time, considering. And I wouldn’t rule out the possibility that line was a little bit of Reichenbach foreshadowing, though it’s not as if it was irrelevant to the Hounds story itself.

I don’t really think Sherlock wanted to die, though, because it would mean he did a very bad job of it.

Or possibly you meant Sherlock wanted to fake-die, in which case I’d still say no. If that’s what he’d wanted, he could’ve done that anytime rather than waiting for Jim to initiate a situation where it had to be done under very specific conditions.