Thank you for submitting this request, voting for it, and sharing your use cases. We have reviewed the request and even though we understand it’s reasonable we will not change the name of the "Project Owner" field in Workfront at this time. We believe that users that might not be project managers can be responsible for and own a project. In this case, they can be designated as Project Owners. As a result, I will be marking this idea as "Not planned".