@nick.carroll it would be great to get back the function to click on an element in the responsive editor and see the size of that element. In the legacy engine we had the ability to click an element and in the left side see the size of that element. In the new responsive engine this is just as important to assist with deciding what types of conditionals we need based around the size of child elements at different page widths.
Would also be incredible to get the ability to set a conditional expression that is ‘container width’ rather than always having to reference the page width. Would make things much simpler to decipher when we put a conditional into effect.