[lj3]

The problem with the first two is how would you communicate that to the user? You could make it a configurable option in a settings menu somewhere, but most people don't bother with those. Even those that do bother with the settings probably only think of changing it when they're actively getting directions, not after they've reached their destination, and so the setting never gets changed. That leaves making it an option while you're trying to follow the directions, which is also a bad idea since you're busy trying to drive.

I do agree that GPS apps should be more user friendly. Maybe an app with voice commands so you can ask questions? Like "Am I still going the right way?" or "When's the next turn?" or "Update me every mile"

As for the last one: there are dozens of tab management extensions for chrome. I'm sure you can find one that does what you're looking for.