Projected completion date in header bar on tasks page

Currently in the header bar on the Tasks page within a project, the Planned Completion date is set based on the project schedule. it does adjust if task durations are adjusted, but if a project is ahead or behind schedule, that planned completion date doesn't adjust or can't be manually adjusted. Because it's at the top of the page we're running into issues with people 'trusting' that date which isn't accurate.

We would like to see either the option to turn that date field off, or to customize it to either planned or projected due date.