Add a warning at the beginning of a route, if there's an area we should avoid.
Every day I use Waze to drive to work. I could take either one of two basic routes. Waze usually says "let's take..." and then tells me which route to take. That helps me know which way to turn when I pull out of my driveway, but often Waze tries to make me go around the block before I can actually get started. Consequently, every morning there is confusion about what Waze is really trying to tell me. If Waze chose one route over the other because there's an accident or a major traffic jam on the other, why can't it warn me? So instead of just saying "let's take 16th Street" it also could say "avoid Connecticut Avenue", too. if there's not a significant difference between the routes, the warning wouldn't be necessary. But it sure would be nice to know that Waze directed me to a particular route because there was a real problem, not just because it might be 2 minutes faster.