In Model-Driven Engineering (MDE) design of modelling languages and model transformations is still an expert’s task. Domain experts, i.e. the stakeholders of languages and transformations, would like to independently define and use their own MDE ecosystem, but can only support those activities. In this position paper we discuss this problem from a more general perspective, arguing for the need of emergent MDE, that is modelling languages and transformations shall be inferred from the usage it is done of modelling concepts. Moreover, the paper outlines a possible research agenda with corresponding challenges towards the goal of emergent MDE ecosystems.