In this chapter, we explore the notion of improvement as it relates to script development discourse and experience. In an attempt to open up debate for further conceptualisation and theorisation, we draw on two distinct datasets: script development guidelines from Federal and State/Territory screen agencies in Australia, and interviews with script development professionals. Screen agency documents were collated and analysed in 2018 for their explicit or implicit directives towards improvement, including analogous concepts such as betterment, quality and success. These were then considered in relation to 14 interview transcripts, the results of which were themed into groups. The interviews were conducted with industry professionals from Australia, New Zealand, the UK and the US in 2017, who have worked in a variety of script development roles across these countries, including as screenwriter, script consultant, script editor, story editor and storyline writer. This rich and diverse dataset is useful for comparing lived experiences—of both developing and being developed—with the discourses espoused by screen agencies.