Mr. Potato Head is actually in the queue in the DCA version. It's hard to see in the videos on YouTube, but the queue actually loops around right in front of Mr. Potato Head. The entrance is off to the right of the video frame, and the queue will then file past the animatronic. But he's also set up pretty high, so you will also see and hear him if you are walking by on the midway. The fact that the queue is empty in these videos also hides the fact that the queue literally wraps right around this figure.
It should be interesting to see where they place Mr. Potato Head in the WDW version. Aren't there any pictures available yet of the WDW version building and setup? The DCA version doesn't open until June, so why are the first videos and sightings of the station, vehicles and pre-show coming out of DCA? Odd.
As for the animatronic, I thought it was very clever! I really like it when he signs the little songs like the "Midway Mania" theme song he's got. That's fun! :sohappy: