While sketching round parts, I use diameter much more than I do radius. As a result, I have to continually use the right mouse button to select diameter. Fusion needs to have some intelligence, and if I pull the mouse to the "other side" of the center line (construction line), automatically switch to diameter mode. Doesn't take away from anything that I can see, and adds great functionality. Solidworks has this functionality, and I really miss it. This is a major hit to my productivity in using Fusion vs SolidWorks....
There have been two previous requests for this that have been archived for other reasons. In both, I don't think Autodesk fully grasped what was requested / needed here. Here are the two ideas:
https://forums.autodesk.com/t5/fusion-360-ideastation-request-a/dimension-a-diameter-from-a-centerli...
https://forums.autodesk.com/t5/fusion-360-ideastation-request-a/diameter-dimension-tool-make-persist...
