I like that it's easy to create custom resources (CR). In addition, swaggerhub has a neat UI for managing multiple CRs. Nothing too much. It would be great if you could define your own schema for custom resources. For example, I'd like to be able to provide additional fields, such as 'x-ratelimit-max' in my CR definition file. I also have some examples where I need to specify different paths inside of a CR's definition file. This was not possible previously. However, this limitation has been improved since the release of version 3.0.2.