Advanced curved walls

Curved walls that have different dimensions other than 90 degree curves. There is currently no way to do any curved walls without the line being locked to 90 degrees, either convex, or concave. This means that any curved walls, are essentially just quarter circles. It would be nice to be able to alter the point along the circle, similar to vector drawing programs in order to customize the curve to different levels of sweep, instead of locking it in place.