i have a De Rosa SLX from the late 80s which i am in the painstaking process of building up. these things are so beautiful, but the bottom bracket area is a veritable nightmare. IMO, this shape looks just so much more elegant than some of the new CF shapes one can find about the place.
but i seriously doubt any frames of that shape are going to be found in a modern pro peloton. in a world where people are more interested in eye catching features rather than basic functionality, a traditional frame is just...boring.