What's in development is a game engine, not just a game. The more games based on a given engine, the greater the return. Large portions of the codebase from SoW would be useful for such a sim. Fully-featured aircraft AI wouldn't hurt either.

An early demo vid of SoW featured a Halftrack with very realistic looking suspension running over rough ground. There are also other indications that vehicle modelling has been taken into account from an early stage.