Champs is harder to qualify this year compared to previous years and it's deliberate, to make it the best versus the best. I don't have a problem with that, Champs should be exactly that - Champs - and it's not something I aspire to try to be. From four attempts this season, I've qualified once (went 4-10 and gave the last game away). The pack rewards gave out fodder, so it doesn't feel like I'm missing out. That said, I can understand the OP's frustration, as he's unable to play a part of the game that he wants to and previously has been able to.
It is a stretch to say that "It’s probably best to give good players a mode to play in. That way you can play in all the less competitive modes and they won’t be there." We know that elite level players and pros are playing less competitive modes, such as Squad Battles, because that's the main reason EA reduced the number of games from 30-odd to 12 (and you yourself have stated that on numerous posts over the last two months). Essentially, top level players want any rewards going and they get them because they're very good, competitive gamers with plenty of time on their hands.
EA could overhaul rewards throughout the game, for example the best Squad Battle rewards could be the worst you can receive in, say Div 5 of Rivals, and the best Rivals rewards could be the worst you can receive at level 10 in Champs - that's not a perfect example but hopefully you get the idea 🙂