thank you Idris.
but...
1. what is different/new/better in iTunes 12.7/iOS11? are there not many advantages to previous iTunes version?
user would want those advantages, but not lose the advantages i.e. App mgt, right?
so if one wants App Mgt so badly, how much is one sacrificing compared to new version, what features & UI/UX gems?
2. is iTunes
12.63
compatible with iOS11/macOS 10/13 High Sierra? or does one have to go through the complicated process of using old OS on device?
3. it is no excuse for Apple to kill what is insanely great:
if one has to backtrack old app versions i.e. iTunes 12.63 and use different OSs on different devices, you end up with Android-like chaos.