Following the visible user interface in the sketch environment, it currently takes 3 clicks just to launch the rectangle command. That's insane. It take 4... 4!! clicks to do it from the context menu. Then 3 if you use the radial menu.
I would assume you guys are working on having a context sensitive ribbon at some point? I couldn't see an idea about this already, I would be surprised if there isn't one, but the search didn't turn up anything for various search terms.