This thread has seen quite a bit of attention and although I would not necessarily generalize viewership as a proxy for consumer interest, it is clear that this is an important feature, even before we start consider what the user base wants.
I've bumped this thread a couple of times in an honest attempt to get feedback from the dev team responsible for Substance Source / Substance Launcher and haven't heard much in response. I understand IP protection and the fact that the development team is not obligated to reveal development progress whenever it is asked about, but it would be nice to improve the transparency of this discussion.
Since v2.3.2 of the Substance in 3ds Max plugin, I have had more opportunity to work Substance back into our team's texturing workflow, but in doing so uncovered new obstacles, which brings us back to where we started:
The fact that Substance Source does not download assets into an organized repository is chaos
It is not useful or intelligent to download thousands of materials into a giant pool with no discernible organizing structure.
Please offer some guidance as to whether this is a known issue and will be addressed in a future update.