IRHydra is awesome, but there is still a lot more friction to using it compared to the built in dev tools. You have to run v8 with special flags and upload files to a web page. In some ways, this is still quite simple compared to getting rolling with debugger/disassembler tools for many other languages/environments.

But imagine a workflow where I'm profiling my real application in the browser, and I see that some function comes up hot. If I could just click its name and get this kind of information, I believe I would do this kind of analysis much more often.

That said, as a person who makes websites, I'm sensitive to the fact that people who claim they would use a feature if you built it won't actually always use the feature when you build it...