Builders like Kirki and Instatic have this feature that let’s you see all breakpoints at once on an infinite canvas. This multi-breakpoint editing would be great to have in Cornerstone as well.
Each breakpoint could render in a frame and is placed side by side on the canvas.
This would enable real-time visualization of how changes affect each device’s layout and as edits are made on one frame, the changes cascade across all device views instantly.
It could be activated with another button in the breakpoint selector which would active this multi-breakpoint mode. Deactivating it would return you to the normal workflow we have now, so you can freely switch between both anytime you want.