I think it's a fab idea,

I'm constantly on the look out for new plans. When designing my own DXF's I do a neat little trick to catcht the Pofiteers out there, When doing panel lines, make sure you add a twist by intergrating your own initials, formers also help, on my Concorde mould I've integrated D/M into the false access panels on the wings so that if someone dare try copying my mould I will find the people who did it!

Make sure you incorporate initials or a logo into joins that would be very awkward for somebody to rework, M's and Z's work well for former joints and ribs as there's constantly guys in the UK ripping people off by selling their plans!