Ehh. I think the AT-ACT is an interesting variation, instead of transporting troops it transports materials in a removable container. However it would be extremely impractical to haul lumber on an AT platform. It would have to be extremely valuable and important. Like vital Death Star weapon components. Because those things only move like 30mph, so it would take all day to get from A to B. Id much rather have the AT-AT, but we'll see if it works in the movie.