Format has its own charm. Switching is a lot weaker for sure, but on the flipside, matches being so fast makes counterplay for many threats much easier - as it is much easier to run "counterplay" tech like Sashes, Scarf, etc. and get consistent value from them in most match-ups (and if you don't you just don't bring the mon).
Main issue I find is just that there is so much bullshit that's allowed between baton pass, king's rock, OHKO moves, infinite Yawn spamming, fast sleep spam, etc. I think in the case of Champions, something like Mega Salamence might also be extremely annoying, but we'll see.