These Lee changes really aren't even that big of a deal honestly
The only thing these changes do is give his peeling a little more impact.
I don't know why people think he's suddenly going to be broken with this. All it does is restore a little bit of late game power to him after they removed his late game presence completely when getting rid of his attack speed slow. The AS slow removal was a good thing but this doesn't change him at all, honestly. To be able to use this effectively means he has to plan on kicking a tank into a backline, which isn't easy for starters and typically requires a lot of things to line up for him to do it in the first place.
I'm not crazy about the idea of buffing Lee either but I'm fine with this change, it's not going to do much. Just makes his peeling a little bit stronger and rewarding, considering all Lee has late game is his R to peel or insec someone.
Stop low elo circlejerking over every little thing, especially when it's not a big deal. Riot is also buffing a lot of champions, the jungle is still much more diverse than it's ever been, not to mention items like Randuins and Thornmail nerfs are actually big hits to Lees late game as well since he usually builds tanky late game to survive some burst. If it's a full damage Lee, I don't know why on earth you'd expect something full damage not to do damage.
Honestly, you people just QQ about the dumbest shit. Meanwhile you think champions like Diana and Rengar are weak/fun to play against lol.

+ another AD item), and ults a 3.5k HP tank;
His ult would deal 600 + 2'200 + 3500'0.21 = 600 + 400 + 735 = 1735 potential AoE physical damage.
Cough