>>>What is it that you could put in a dev tool to benefit a user?
>>
>>If a feature does not in some way benefit the user, then it probably shouldn't be in the dev tool.
>
>That depends on perspective...development tool improvements can speed up development time, which in turn can benefit the user...

Exactly. Other features might be more apparent like the ability to seamlessly work with MS Office, launch a browser, display a JPG.