Is there a clear guide as to what differs between Developer Edition and regular Firefox? The home-page for the Developer Edition project seems to mostly cite the inclusion of devtools, though these are of course present in the standard version.
This is the biggest difference: Beta dev tool and experimental features.
Easily selecting an entirely separate profile from within the browser just seems like the right way to handle this from a UX perspective.
- Create a New Profile
- a list of the existing profiles
- - for each one of those, a "Launch profile in a New Browser" button for any one that isn't already running
along with "Rename" and "Remove" buttons, so that feels about as full-featured a management screen as one could ask for. The only(?) user-hostile behavior is having to know that about: URL
* May have been remembering this: https://addons.mozilla.org/en-US/firefox/addon/profile-switc...
Besides that I'm not really sure.