enhance schema-image.json

According to the doc: http://docs.openstack.org/cli-reference/content/chapter_cli-glance-property.html and the file: /etc/schema-image.json
I have two questions :
1. There are many image property keys in doc.Why not add them in the schema-image.json?

2. some keys are enums, such as architecture or os_distro. Why not let their type be 'enum ?

I'm new in Glance. Need someone help me. Thanks very much.