This taunt would be the most OP taunt in the game (no joke, I swear).
Why?

And it has no outro animation, therefore if you see anyone coming you can immediately get ready to kill them (will definately be useful for a bow sniper, stab stab stab). Similar to the Director's Vision taunt, but that one isn't looping.
And, as the description says, you can keep an eye out for anything, extend your field of view. Find a high vantage point then activate the taunt.

Not only does this taunt look cool, but there are some cosmetics that can work very well with them, more specifically the Batman: Arkham Knight promotional items.

My personal favourites are Soldier's and Heavy's.

I can imagine that a taunt like this would sell for about 12.99 USD. I'm not sure whether or not VALVe gives royalties to the creator[s] of the material but if they did, it'd be pretty cool for the creator[s].

And no, I'm not saying it's a group taunt (although it would be useful for what I'm about to say).
If you were to collect your whole team together, or everyone in the server, and activate this taunt, imagine how cool the screenshot would look.

Suggestions:

I'm not sure if VALVe does the hitboxes for workshop material, but if not then try to work accordingly.

I'm not saying I don't like the name, it's awesome.
But if you ever decide that you, the creators, don't like the name or wanna change the name. Try to consider 'The Lookout'.
Normally my ideas are stupid so chances are that one is too.

All in all, it's well made and so f ucking awesome. Kudos to the creator(s).