What about VW writing a drawing conversion tool for the forum?
People often ask here for others to convert a file to and up or down version. Yes I accept it wouldn't always work but .mcd's are quite a hassle and also there would be more opportunities to share workflows and ideas (many basic features don't change between versions). It would be great for 2D - often a plan view conversion is all that's needed, also great for worksheets and reports, symbols and so on.
If the tool couldn't do it it could flag\alert the uploader and they could then escalate their request as a forum request.