Following a several-days-long Twitter exchange, Harry Mattison has created a cool add-in and provided it for download at:
(also on Boost Your BIM product page)
And yes, it automatically rotates the Section Box!! Essentially, this produces a box that is "aligned" to the Wall. Conversely, the Coins version currently only produces aligned section boxes when you produce a section box around a scope box or around a section line.
@MattBeNimble @lukeyjohnson @dpStuffTools @mattmas install for #Revit 2013 & 2014. Please let me know what you think http://t.co/iYDwPDv0Ki
— Boost Your BIM (@BoostYourBIM) October 6, 2013