While some features like +1s and contributing guidelines should be baked in, other features like extra fields, requiring people to sign a disclosure, etc would be best left to plugins that can hook into issues much like CI services hook into pull requests.
While some features like +1s and contributing guidelines should be baked in, other features like extra fields, requiring people to sign a disclosure, etc would be best left to plugins that can hook into issues much like CI services hook into pull requests.