I’m not sure if this was brought in in RC4 or RC3 but I like the new simple version of the device views but I always found it useful having the actual sizes there in case I needed a reminder of them for doing some custom CSS.
For example right now I need to do some background positioning for different devices and it’d be good to have reference for each breakpoint.
or (Feature request) adding a quick media query add per breakpoint to the custom CSS pane?