in my opinion they nerfed lee in the wrong way and should have looked into cooldown nerfs (to 90/85/80 or 90/80/70 depending), cast time reduced (maybe insecing made more difficult ie flash before then ult), and or subsequent hits on his ult (ie target loses velocity and thus damage after hitting more champions), while keeping his base damage pretty decent. im fine with him dominating early as long as he falls off as hard as pantheon, but his effectiveness and utility are keeping him relevant.
As for yasuo I'm hoping his crit damage is adjusted to be worse early and normal late game ie attaching it to his ult level (40/30/20/10% crit damage reduction and similar but ending at 25% for his q crits or whatever game balance dictates) as well as his ult cd maybe 5 to 10 seconds at rank 3.
both are deserving of nerfs. as well as cait, vayne, twitch and others i cant recall.