At a minimum if there were no changes in permissions wanted a notification saying X app updated and is using the same permissions, click here to see how many times each permissions was used (with the more privacy related ones at the top of the list) would be nice.

Then you don't run the risk of normalizing people always just clicking allow on the prompt that happens all the time (hello windows 7 UAC), which still giving them easy diacoverability and hints of poor behavior with existing permissions.