The Google Play store (and others) already give you feedback - customers give ratings and can provide a comment. This is much better than a central authority dictating what is good and what is bad.
There are many apls that have no need for a great UI - that a perhaps more functional in nature than aesthetic.
The beautiful thing about an open policy like the Google Play store is that you can not just get actual customer (Apple reviewers are probably not your customers) feedback and actually REACT to the feedback by uploading a new version right away... While on Apple Store users have to wait 7-10 days for the App to be "approved" - and if it gets rejected you have to wait another 7-10 days.