What do you think of the possiblity of writing a plugin that records the commands in the feature tree into a text file? Then this text file could be loaded in an older version of SolidWorks such that the model in the newer version of SoldWorks is recreated in an older version of SolidWorks. I know that some commands aren't compatible like the lock mate. However work arounds can be made like for the lock mate constraining a part to the origin and planes of the part its locked to.
What are your thoughts? Is it possible?