Modify/decorate http responses via DiagnosticListener callback events

[faisalcse98]

I am from Microsoft Research. I work on developing tools/systems to improve the reliability of cloud services. To achieve some of my goals, I am looking to develop a tool which will listen to http events via DiagnosticListener and will modify/decorate targeted http requests and responses. I can see that OpenTelemetry is already using similar mechanisms to trace http requests by automatically appending additional information to http requests and responses. My question: is there any issues/concerns in modifying/decorating http responses via DiagnosticListener callback events (that I might not have thought about)?