Allow us to add other ETW providers to the Profiler trace. For example, System.Net traces - in .NET Core the only way to get System.Net traces is via ETW, which the only way to get an ETW trace out of App Services is by the DaaS Profiler Trace. If we can customize the trace to capture a custom list of ETW providers, then we can open-up so much possibility.
One downside of that is ETW providers that folks shouldn't have access to. You would probably need to build a blacklist of providers that are off-limits. OR, you could add sets of MS providers, like System.Net, and have that be a built-in option to collect or not.