The traditional way of developing production systems is often limited by merely considering an imminent new product. The longevity of a production system’s lifecycle is at risk following this approach and may create a focus on the current functionality and capacity rather than on fulfilling future product requirements. Changeable production address this challenge, however, support for production engineers to consider more changeable solutions is lacking. Thus, this paper proposes support for evaluating production capabilities and mapping how new products may impact the production system. The support is developed in two industrial cases which studied current production capabilities and future requirements put on two automatic assembly lines. The support allows for estimates of the cost of repurposing the assembly lines to accommodate the new products and paves the way for seeing beyond the dedicated manufacturing paradigm towards increased levels of changeable production.