[mplanchard]

I watched the video you suggested and saw the cube. SolidWorks user interface concentrates on less mouse clicks and less mouse travel. When you design all day long - fractions of a second take time away from the model you are working on. Yes there are the control keys that change your views and others use different mouse pointers. Also, SolidWorks automatically put you in an isometric when you extrude your first sketch.

With that said, if enough uses said they would want a "cube" as an enhancement request, SolidWorks would probably create the functionality because we implement hundreds of these every year.

For the first part of the video, I would instead use the center point rectangle sketch tool - why create a vertical and horizontal center line when you don't have too.