Vexille looks impressively interesting. Computerized graphics are always an added bonus when they do not look artificially done.
The unfortunate drawbacks to many animated CGI films, especially found with anime, comes when it focuses on "wowing" the audience with their artistry, believing that it adds to the "cool factor."
Even in the 10 minute preview, Vexille has it's share of slow-motion matrix-esque effects that is detrimental to the flow of the movie. The story is often times clouded by too much time spent with the "camera" directly scanning the nice, graphic details. The other issue that comes to mind is that the artists fail to render characters in a way that reflects realism. Quite often, body movements are extremely slow and jerky, likely counteracting their intended purpose to make them as real as possible.
Nevertheless, Vixelle is filled with top notch CGI entertainment with a likely story that packs a full punch. It seems like a great title that'll be a perfect addition anyone's ever growing anime collection, or for that matter, animated collection. I will be buying it when it comes out on DVD.