It would be nice Waze could attach to other systems with events via for example zapier and/or ifttt. Events that I think of:

Starts navigation to 'lat/lon' (bookmarkname)
Arrives at destination
Is in traffic
Shares route
Is 1 hours, half hour, 15 minutes, 10 minutes, 5 minutes away from its destination

Logs drive (from/to, starttime/endtime, distance traveled, (compressed) gpx attached.

This way everybody could easily make rules like

log {all} journeys to a google spreadsheet.

Or share my drive easily on facebook, twitter, etc.

Or, when I go {home} between {16:00} and {19:00} share that drive with {spouse}.

Or, when destination is {volleybal} share drive with {team members}