If I’m not mistaken, all of the UI and HUD elements are handled through Autodesk and that one can be a b word to work with.
But yes, it’s not an issue of whether or not they can do it. It’s an issue of whether they are able to spend the time and manpower to get it done.
My belief is that switching game engines halfway through development was a horrible idea. They’re stuck playing catch up while they’re under contract with the publisher to push out the content on time.