The one on my homepage isn't public. The new version has all those features. I've decided not to make the new (and very much improved) version not available to the public.
The main reason is I've spend so much time on the Googlemaps addon and it has been installed by so many people. Only a few have actually taken the time to thank me in some way.
To answer your question: yes, I can set the zoom of the map in my adminpanel, ranging from 0 (wide) - 15 (detailed).
But let's not forget this thread is not about my addon but about the wonderful addon baerlichkeit has made.