2) The utter lack of information regarding the attraction. As I outlined above with regard to the D23 expo, virtually every other aspect of Carsland was addressed, often times in great detail. They told us where the Fastpass machines for RSR would be located. They told us Flo's would be a counter service restaurant. They told us Luigi's would be a flying saucer "reboot." They told us Fillmore's would serve juice. They told us Sarge's and Lizzy's would be retail space. They even went so far as to tell us the names of the food that would be served at the Cozy Cone: Chile Cone Carne, etc. Pretty much the only thing they glossed over was Mater's attraction, for the potentially rather obvious reason that they would't have much to hype about a newer/better version of an off-the-shelf technology, a smaller scale version of which already exists about 50 feet away at Francis' Ladybug Boogie. With all that in mind, I find it hard to believe that they'd just accidentally omit talking about an attraction that would supposedly use a never-before-seen ride technology with never-before-used ride vehicles without at least saying something about it.
3) The quite obvious Figure 8 attraction pictured in the newly released photo from WDW's Fantasyland expansion. It would be a re-themed clone, and purchasing two of an identical attraction vs. building, from scratch, a never before built, one of a kind attraction would save Disney literally tens of millions of dollars.
4) And finally, I've seen a rather convincing layout of Mater's depicted as a large figure 8/16 style attraction. While I hate saying "I can't tell you where I've seen it," in fact, I can't tell you where I've seen it. It wasn't recent (it was pre 2009), but it absolutely depicted the attraction with the exact layout seen in the Tinkerbell/Fairy attraction pictured in my earlier post.
Sure, their plans may have changed at some point to go with a more elaborate and unique attraction, but at every step of the DCA Phase I makeover, we have yet to see anything plussed, and we have several examples of what I believe is an incredibly smart decision by Disney to put funding into the areas that are most desperate for it (with the slightly unfortunate side effect that some really cool preliminary "blue sky" ideas had to be either put on hold or cut completely). This will allow RSR to be the best E-ticket at the entire DLR, as well as maxing out WoC, and giving us perhaps the DLR's best non-E-ticket dark ride in Ariel's Adventure.