This paper continues the discourse of the round table session of eCAADe 2002 on the problems of existing digital city models. It reviews recent papers on the subject, suggests criteria for the improvement of digital city models, and points out some applications for a broader base of users, and particularly in the field of architectural education. it is suggested here that the design professions of architecture and urban design should be more comprehensively included by broadening the approach to 3dcms. Changes in contemporary architectural, urban planning and design theory, collaborative design practice and constructivist education, lead us to suggest a change of emphasis from 2D urban planning principles to those of 3D urban design and morphology.