RFE: Add proportional lock to smart corner info field

I’m using smart corners a lot for fast iteration of rounded corners. To adjust the size of the radius I use the scaling values in the infobox. Entering the same value twice for every change seems redundant. Could we have a lock icon/functionality similar to the one in the scale transformations palette? This way only one value needs change while the other is automatically propagated. I’ve attached a mock-up screenshot.

Thank you and have a great day.