The main purpose of the Design transfer view is to transfer data as clever way as possible (usually using parameters). The advanced brep provides means to transfer more smooth geometry. These goals are contradicting.
My opinion is that advanced breps (and b-splines) do not belong to the Design transfer view, but rather
to “visualization view”, which should be an add-on view to reference view.
I have an example:
In design transfer view the workflow is to convert the IFC data into native data format. The parametric profiles make it much easier to do the conversion than the advanced breps. At least there needs to be a alternative representation as parametric profile extrusion in use in this case.