It's possible to show proper shadows on plans through the use of an orthographic camera:
http://therevitkid.blogspot.ca/2017/01/revit-tutorial-true-solar-shadow-studies.html
This should be a default option since the existing plan or section shadows are not communicating anything useful and are actually quite misleading. (The house is not actually chopped in two, columns attached to ceilings should not get shadowed in most situations...)
It would also be good to use these plans for presentation with annotations. The existing workaround is not a good long term solution and has it's own limitations.
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