I think one of the things I liked the best about the 919 was how easy it was to do nice simple mods that look great.
Keep those pic's coming!
Here is my tip, take it for what it is worth.
The old mirror mount holes, use some plastic plugs that can be found at most every hardware store and auto parts stores - there are a variety of styles, hard plastic, rubber, see what looks the best to you.
Another approach is to put a allen head or bolt (painted black, or course!), in the hole.
Also, it can be made into/used as a mounting point for a GPS/Radar Detector -