This fits very well with the saying "you can't do that with Revit": Paul F. Aubin, author of numerous Revit books, has published a book on dealing with classical architecture called "Renaissance Revit: Creating Classical Architecture with Modern Software".
A must for all those who are faced with such a problem - but no less interesting for everyone else, as you will definitely learn a lot about dealing with complex shapes in the family editor!
On Amazon a "look inside the book" is also possible.
The book is currently only available in paper form (either in black and white or in color), but an e-book is also set to follow.