Can we get this to be about 2X the size? Ideally this moves over to its own "admin tab" so it would be "Plans, Takeoff, Reports, Community and ADMIN (for admin users)

Thanks for the feature request @Kyle, I shared it with the dev team. This is a great suggestion!
For sure. We have plans to make it full screen as soon as we can (similar to Reports Tab, or Users page where the header is still visible, but the rest of the page is used for defining custom properties).