Suggestion: Shorten x-request-id value for dev setups
When running in development, even the non-elk version will print the x-request-id. This is nice as you can now grep/search after the x-request-id during development. On the other hand, the x-request-id UUID value are quite long and takes up much of the screen real estate. This means less space available for the message itself.
Maybe consider adding a dev-mode where the x-request-id is shortened to just the last segment of the uuid, which should be relatively unique within one dev session.