In this poster, we sketch our research plan about a “massive” empirical evaluation of model-driven techniques following the first two already conducted steps in that respect (an exploratory survey and a series of controlled experiments concerning maintainability). We intend to experiment UML-based model-driven techniques in several contexts (e.g., desktop and Web applications), focusing on several software characteristics (e.g., maintainability and productivity) and employing empirical methods such as controlled experiments, surveys, case studies.