This is important. If we're really trying to open source and preserve DOS, we need a better system. Someone at MS needs to create museuem.github.com and allow us to browse everything just as it was preserved on disk.
I think it's a mix. We're learning a bit each time. I'm bummed in the rush to get this finally published we made a few errors. We first found what looked like the source back in September last year.
Having the source on GitHub feels like a nice way for some people to peek through it... but there's clear compromise between archival and sharing some source.