Now, to be fair, melee combat did EXIST in the first two Thief games. Because you can't just jump back into the shadows, boy!
It just wasn't the FOCUS of the game.
I don't think it is possible for a modern game to not make combat the focus. I think AAA publishers are too stupid and cowardly, and AAA developers are too desperate and whipped-into-submission for an actual worthy sequel to a game like Thief to be born. Only an indie dev would take the risk, and of course they wouldn't be able to secure the rights to the word thief, so it'd be called something else and only a handful of people who knew or cared what the original Thief was like would even hear of it.
Deus Ex: Human Revolution is the ur-example of the new "normal." Thief will have third-person fatalities because it would be unthinkable for a modern AAA game to ship without them. And if an American AAA developer were to somehow get their hands on, say, the Amnesia license, I'm sure they would turn it into a first person shooter with online multiplayer.
This is the age we live in. This is the industry we're stuck with. And industry reviewers are complicit, and therefore part of the problem.
And by the way, don't think for a second that anything they showed in this video was necessarily even slightly real. This is another Vertical Slice publicity stunt. It is completely rational to treat this as Aliens:Colonial Marines all over again until someone proves otherwise.
Unfortunately, that can't happen until the game actually comes out, so we're pretty much boned.
If you pre-order this game, you are encouraging them to ignore your input.
They can have my nostalgia money when they make a worthy follow-up to a game I used to play. Not before.