Argo tunnel/cloudflared feature request - http status redirect

In the various argo tunnel/cloudflared documentation there is mention of the http_status agent that returns a status code. So far as I can tell (looking in the github repo at cloudflared/origin_service.go at master · cloudflare/cloudflared · GitHub specifically) it only returns a status code. It would be really handy if it could return very slightly more - such as a 30x Moved status with a relevant URL like https://somevalid.tunnel.endpoint/

It would also be nice it if could return a trivial 200 message like “Nothing to see here” but I can see that being more complex/error prone.