The last few years Obeo has built - mainly for corporate customers - several modeling workbenches dedicated to various domains : from enterprise applications to embedded system going through the insurance portfolios management. For each of those project defining a specific vocabulary leveraging the domain concepts was a key success factor but was not the only one : the ability to easily adapt the associated meta-model and the associated workbench, to support rich user interactions hiding some complexity and leveraging several kind of representations in a coherent environment were important factors too : they allowed us to adapt the tooling to the customer's methodology.