The only good thing about Tom Cruise playing the part would be that he could just WALK through the vents and not have to crawl.
And Metal Gear was never a book. It started you as a simple sneaking game on the MSX console.
The movie should start with THAT plotline. Snake vs Big Boss. A Metal Gear SOLID movie would be like a second sequel or something.
Unless they wanted to do the whole Star Wars idea and kick it off at like Episode 3: Metal Gear Solid like the Originals did. My only wish is that if they do the prequels, not to make them crap.