Yes, the current winner always qualify in real life for the upcoming edition, and Europa League winner play the CL. So for realism the game stand with the real rules.
Then promoting 100%+ means that you'll face `1 levels in CL-Cup... by my viewpoint tanking isnt better than lower the AvQ to face equal and -1level teams... I won 19CLs and 15 SLs in many different situations, with +1L -1, tankers of different levels etc btw..
They are the same to me as well. Anyway if it follows real rules then they shouldn't change it. There are other ways to fix the issues but they have to think about how to do it without losing accounts and videos. I am assuming alot of the manipulators and tankers are more active than regular players which is what I notice