Does Realthunder FreeCAD need this feature?

[geek emeritus]

Would FreeCAD benefit from a small mark on or near the corner of a face: Top, Bottom, et cetera, so you can get oriented faster after rotating an object?

[M4x]

There's a navigation cube and the faces have names on them. What else do you need?

If you've a wish regarding realthunders branch, you should post at his github repo.