I find it rather inconvenient when I need to edit fields and can't see what fields are already handled at higher level of classes hierarchy.
Note properties dialog is aware of this hierarchy.
But the fileclass page is not, only showing own fields.
I suggest adding inherited fields to fileclass fields tab.
They should probably be read-only, with clickable headers leading to fileclass fields tab of respective fileclasses, for each level of hierarchy.
I find it rather inconvenient when I need to edit fields and can't see what fields are already handled at higher level of classes hierarchy.
Note properties dialog is aware of this hierarchy. But the fileclass page is not, only showing own fields.
I suggest adding inherited fields to fileclass fields tab. They should probably be read-only, with clickable headers leading to fileclass fields tab of respective fileclasses, for each level of hierarchy.
Mockup: