Valve readying new Team Fortress 2 toy? Enter the "Guard Dog"

Valve has either dropped the coolest "troll" post in TF2 blog history or we have something really awesome coming our way.

The latest update to the TF2 blog has mention of a guard dog.  If you aren't up on the details I will give you a quick refresher.  Someone created this awesome shop of a new class/weapon so to speak within in Team Fortress 2.   Yesterday someone sent it off to Robin Walker and he noted it was "quite awesome".  Today's blog update has letter from the infamous Saxton Hale of Jarate fame and president of MANN Co. noting that the "application is pending", "we will evaluate your invention" and that he looks forward to "working with you in the future".

The photoshopped page is pretty amazing and really has that Valve feel.  While the nod in the TF2 blog today is probably a shout-out for work well done I can't deny that looking at it I almost want it in the game.  It just looks like a complete blast.  Jarate was implemented off a joke and later came to fruition in the game and Saxton Hale had his hands all over that one.  Maybe we could actually get guard dogs in the game?

It is probably a long shot but I almost wouldn't mind seeing it as the oft rumored new class within the game.  This could possibly even work as a new Engineer toy.  To be honest I wouldn't even put it past Valve to have planted the forum user and created the idea themselves to see what the community thinks.

In all likelihood, again, this is probably just a thanks from Valve for this users awesome work.  But this game is very community driven and if the response is positive just maybe?  What are your thoughts?  Would use or play guard dogs in TF2?  Or is a completely stupid idea that "doesn't belong in the game" like so many regard Jarate?