The Expect project for has focussed on acquiring problem-solving knowledge for users for the last decade, using an expressive language that is open to inspection. Our aim has been to alleviate the bottleneck in creating knowledge-based systems by providing support for both knowledge engineers and end users to specify problem-solving knowledge. In this position paper we summarize selected areas of current research where we focus on end-users, and highlight some of the research questions that arise from them. For further details about the project, including the papers we reference here, please see our web page listed above.