Funny you should say that. I built a house in Canada using a very simple grid with the framing diagram on it. This was so easy to do that I hit on the idea of using (no kidding) paint shop pro and I drew the whole thing (all four sides + interior structures) like that and used that to frame the house and clad it with OSB. Worked like a charm.

Low tech solutions are at times very effective, I'm pretty sure if I would have done that design in autocad or some other program that I would have been able to make pretty 3D views and such but it would have taken a whole lot longer and the end result (the house) would have been just the same.