Without much research whatsoever, it seems like more and more uploads are under the Standard Digital File License these days, which does not allow remixing of any sort.
While I agree that the various licences available are very important, I also feel that the value of remix culture is being lost or discouraged.
Remixing is a catalyst for innovation and community growth. Encouraging creators to build on, adapt, and improve existing designs will foster collaboration, innovation and creativity, empowering makers of all skill levels to participate, learn, and contribute meaningfully.
I have learned so much by being able to remix other designs, but if I am not allowed to share those remixes back with the community, it is very discouraging.
There are many designs out there that are fairly basic and you might think, “that’s kinda cool, if I made this little tweak, it could really improve it”.
That improvement may never see the light of day, due to unnecessarily restrictive licencing terms, and that is a real shame.
Of course everyone has the right to choose whichever licence they feel is best for them and the particular model they are uploading at the time, but I think that encouraging a more open and sharing community attitude at the point of upload, or a larger push via a public announcement, can only be a benefit to everyone.
Check out Everything is a Remix by Kirby Ferguson on YouTube for an insight into the human nature and value of “remixing”, and why I think it is so important