This is something I've been wanting ever since maps/driving apps came. I'd love to have Waze/GoogleMaps be angry when you miss an exit or miss the initial ETA by too much.

However, I don't think it fits the culture too well in the companies that could do it as trying hard not to offend anybody is of utmost importance.

Ya but language like this is how you know someone is good friends with you

I would love this so much.