Live-Action Transformers

Huh?? Plans are under way to produce a live-action version of the animated tv series The Transformers. Live-Action? If I remember correctly there are pretty much no humans in that series and except for the face, no real human body parts. So this will be more like a computer animated movie on top of real world decors. Think the upcoming Hulk movie but where every character is CG. Why not make the whole thing digital??