If I could add a few more suggestions:

1. The blue on purple color scheme is a little hard on the eyes. Changing the blue lines and circles to #0f0 green helped a lot. (Green also has strong "on" semantics)

2. My SO and I both had trouble finding the trash can. We both tried to drag components back to the workbench or off of the mat to delete them. A larger trash can icon or just making it red might help.

3. I ran into some z-layering issues (at least on Firefox). Opening a component info bubble from the workbench displays under the mat. Also the "results" popup displays underneath any components that might be on the far side.

Overall great game though! I had a lot of fun with it. Thank you!