What's unique about it?

I know it sounds like an odd question but every film that Robert Zemeckis makes involves an innovative use of effects. For example:

- Who Framed Roger Rabbit was the first to combine animation and live action without the use of green screen

- The Polar Express, Beowulf and Christmas Carol all used Zemeckis' image movers technology which scans an actors face and combines it with animation.

- The Walk had near perfect cgi in the pivotal scene where Petit walks across the Twin Towers. It's realism caused a lot of people to suffer from Vertigo.

- Death Becomes Her used a lot of digital effects for the contortions of the two female characters limbs.

You get the point. So far, there has been nothing to suggest that his innovative technology will play a big role. But given that Image Movers is one of the production companies behind 'Allied', I was wondering whether the film would feature dead actors. The style of the film seems reminiscent of Casablanca and other war/spy films of the time. Will we see an appearance from Humphrey Bogart or Peter Lorre perhaps?

What are your thoughts?