Waze should be able to give more detailed and frequent directions, perhaps as a selectable option (e.g. regular "keep left/right and go straight for the next __ metres" reminders, or more frequent "turn left in __ metres" instructions every 50m rather than 100m/200m).

In one experience, the road I was travelling on split to two separate but parallel lanes, and because Waze didn't mention anything I ended up taking the wrong path. A more frequent reminder to keep left/right would have avoided this.

tl;dr make Waze more talkative.