I think usability should be improved in IBM Engineering Lifecycle Management (ELM) as the top priority. If you look at the UI, it was literally designed ten years ago, and even at the time it was introduced, it was already somewhat outdated. Even though it is a professional tool, nowadays people expect at least some level of usability from their tools, regardless of how professional the task is. Additionally, if you want to utilize it on a wide scale in an organization, you need to train every person to use it. There is always a threshold for new users to start using it.
