^is found in plain A2K-A2K4 also. Right-click in a toolbar belonging to the ACAD menu group and choose the "Viewports" toolbar.
Don't know how to get architectural units on top, though (quite content with having metrics on top here
)
Added: The viewport scale is a built-in control, but I'm sure with some VB knowledge it can be tweaked or replaced by your own definition?
The menu definition is
ID_VPScale [_Control(_ViewportScale)]