It would be useful to be able to optionally display all or a subset of the response headers from each request, or to flag up when a reponse header matches a particular search string.

A recent test I did involved checking a load of API endpoints for header injection, and my requests included "X-Some-Custom-Header: <script>alert(1)</script>", and the server would sometimes duplicate this header in its response, or copy the header value into the response body. Being able to filter responses based on whether they included the payload in the response, against a wordlist of endpoints would dramatically speed up this testing.