First off, I am very happy that you have chosen to include the hazards participation Using the Edge Explore 2. Took my first ride using it last evening and encountered a couple noted hazards and even contributed one myself.
But...
Font size and positioning of the alerts on this screen makes them essentially unreadable while riding, therefore not useful, I'm not going to full stop to squint at it every time one comes in, especially with the alert radius that these seem to appear at.
Also, some greater explanation of the feature would be helpful as far as screen elements, icons, perhaps dismissing alerts, How long alerts stay on the screen etc. I enjoy new features, but I enjoy them more if they don't appear as a surprise :-)
Great idea, but work in progress, "waze for cycling" need to work for everyone!