Text-to-image generation is one of the most significant technological advancements in artificial intelligence (AI) during recent years, with the software Midjourney being amongst the most popular tools for this purpose. There is however some uncertainty about how tools like Midjourney will impact and integrate with creative professions, such as graphic design. To successfully integrate graphic designers with image-generating software, it is necessary for the tools to be designed according to the needs of their design process. This study, therefore, examines the requirements graphic designers have for Midjourney to be integrated into the idea generation phase of their design process. Requirements were gathered through interviews, which were then prioritized through surveys. A comprehensive list of requirements was formulated based on these findings. An analysis of the results was also conducted to analyze the prioritization of each individual requirement. The results highlight areas of improvement in Midjourney, with a focus on control and usability. The discussion explores factors that could have influenced the validity of the results, along with a reflection on the study's implementation. Finally, the conclusion of the study outlines the key improvements needed for Midjourney according to the results and suggests directions for future research within the research area.