Mass-Unpause of construction entities

I was using Planner mode to make a big combined iron/steel smelting location with 6 mk2 smelters and the assorted casters/storage. Once I finished planning everything I realized that turning planning mode off does not issue the orders to start construction. I had to click each entity, belt, and channel to begin the construction. Is there a way to make a bunch of paused construction begin that I missed? If not, could it be added? Could look something like: While in planning mode, you can hold right click and drag a box over entities being constructed to toggle the pausing/unpausing of them. Or Alt+click?

In combination with a blueprint creation mode, so that you can create blueprints, place them an mass unpause them to be constructed.

The pause tool has an area of effect function. Click and drag to activate.