We need to do more than just structural validation of the Swagger files:
***** The validation requires both the resource listing file and the API declaration/resource files
Regarding the defaultValue, the same would apply to minimum and/or maximum.
Another thing you can check regarding the defaultValue is that its type corresponds with the type+format fields. Not sure if the JSON Schema currently checks this, not sure if it can.
Thanks Ron, that helped a lot. I went back and updated the issue to reflect.
Based on what is known right now, this issue is complete. Please file bugs/enhancements related to semantic validation as new issues.