You can add this feature yourself today.
In the Export Audio dialog is a little field for “what to do after export” (not the exact name).
You can actually create entries for this field yourself by writing a little script. Unfortunately I don’t know the location for these files on the Mac. Neither do I know how to write a Mac script to open the file.
But here is an example for Windows:
Maybe that helps you already so that you can write it yourself. You can use the .aepp file directly but need to rewrite the .cmd file that it calls.
Otherwise you’ll have to find a Mac user that can either write the script that in my example is a .cmd file. or compile the posted source code of the C++ file that fab67200 posted.