I actually work with 2 FHD monitors of 27" and it is very useful to have browser on a screen and DevTools on the other one, but an entire 27" for each DevTools pane is almost too much, so… I sincerely would like to optimizie visualization having the possibility to split and undock panes, place them side-by-side.
Imagine that DevTools is maximized to entire screen and it is divided into 4 regions and in each one would be shown a different pane, for example we could contemporary see Inspector, Console, Debugger and Style Editor.
It would be a very “killer feature”