Contribution to symbol and/or footprint libraries still welcome?

In the post below, I had a proposal for a “melee library”. The idea is that all proposed symbols and footprints are “dumped” in it.

  1. This gives gives them an opportunity to be used, instead of waiting (years) on gitlab for approval.
  2. When people use them, there are much more inclined to give feedback.
  3. When people see it works, they are motivated to put some more effort in it themselves.
  4. When people see a library item they can actually use themselves, they are more inclined to spend some time on improvement.
  5. It makes the threshold to make small contributions a lot lower.
  6. More people joining in reduces load on the librarians.

I am also a bit in doubt from library parts that come from sites like snapeda, pcblibraries, and similar. I do not know if there are legal issues with (modified) parts from such origin to be put in the KiCad libraries. Are the KiCad librarians supposed to check for this? Should each library symbol or footprint have a copy- right/left statement?