Just to start from beginning.
I thought that src folder and the subfolders should include only files used to compile or under development. Therefore, if someone wants to share some files with us, then they should be placed it into unused folder, everybody can find it and they don't mess up the source tree. If we place unused files everywhere then we loose the readability of the structure and no one would know what files should be really used for compilation and which are there as some documentation.
Honza