When I post the follow up with our internal discussions you’ll see we did talk a bit about steering happy users towards the App Store and unhappy ones towards support. I bet you are right that it would be effective at having higher ratings but it didn’t feel good to us.
But there is something valuable in that. It would get people to tell us their issues and we could respond directly to help them or at least acknowledge that their input is heard. We have a wonderful support team that is not outsourced and puts a lot of care into their replies.