Hi Bob,

> - perhaps I'm missing it, but I really like (in most other CAD programs) having the
> physical dimensions displayed as I create a line, for example; the length of the line is
> displayed on screen as I pull and place the line.

The distance between the last 2 picked points (and so for lines it's the length of the line you are drawing), is displayed in the distance input in the UI which is located here on the bottom command bar:




> Or, when I create a circle, I like having the circumference displayed as I enlarge the circle.
> This would allow for more precise sizing and placement.

For a circle there is not any readout of circumference, but there is one of radius or diameter in the command options area, which will update as you move your mouse around:



For most commands the feedback will be either in that XYZ / distance / angle control on the bottom which applies to all point picks, or to a control in the command options area which has stuff specific to the individual command.

Hope this helps,

- Michael