This is something so simple and that i dont know why it hasnt been done already. A lot of firms work for developers and the way they want the areas is not as simple as just taking the all the interior faces of the wall or just the centerline of the wall. i know when we do projects for certian developers or for certain agencies, they need the centerline of demising walls, outside face of corridor and outside face of sheathing on the exterior wall. instead doing double work using area plans, it would be much easier if it was inherent in the actual wall. for all the haters saying dont be lazy, when you have hundreds of walls and the clients making constant changes and you need to pump out ares for them instantly, going to change 10 floors of areas plans every time is a huge waste of time. please consider this asap.. people who do this type of work would really appreiciate it. its a lot more useful than half the additions you guys are making that no one uses