It's impossible to define "high quality" as such in binary terms. However, there are some things I think must be there before a contribution should be tagged as high quality. These are:
- It must not have any broken parts (misnamed files etc)
- It must have a render attached (otherwise people have to download it to see how it looks)
- It should have a thumbnail attached (I'm not sure this should be a hard requirement, but since it's really easy to fulfill and since it enhances the user experience, I lean towards it)
For "broken" it's probably a bit easier. It should match one of the following:
- Have missing or misnamed files.
- Have filenames containing characters that are illegal in some operating system environments
- Cause problems (stacktraces, crashes) in either MakeHuman or blender
Any opinions about these?