It is argued that personality testing and group dynamic principles could improve the success of development teams in developing systems by providing a mechanism for repeatable and valid identification, rating and selection of stakeholders in the method engineering process. The method presented, MEWSIC, aims to formalise the development of situational methods so that the link to quality assurance processes are retained. MEWSIC accounts for the number of stakeholders who have a legitimate interest in the success of the project, but distinguishes between those who provide input that informs the method engineering process, those who carry out this process and their team role types. An overview of MEWSIC and a discussion in the need for personality testing and group dynamic measures is given.