For how strong Xayah's DPS is, the burst on her E is pretty ridiculous
I've played against/with around a dozen or so Xayah's and there hasn't been a single instance in which she hasn't completely popped off and gotten insanely fed, completely dominating the late game.
She's like a Twitch who trades stealth for a huge root, except her AoE auto-attacks have little to no downtime with how low her CDs are. Even if you manage to catch up to her, she has two ways to completely nullify that with her E and ult, which is a pretty bonkers ability to put on an ADC if you really think about it.
I get that she's statistically balanced right now (like a 51% winrate with a 10% pickrate if I'm not mistaken), and I don't think she's broken or anything, but I've recently been playing against a few and she feels impossible to deal with as anyone melee because of how insane her kiting and utility is. It's certainly not very fun to deal with at all.
If Riot is open to any light nerfs I think her E damage needs to be reduced. Too many times have I finally caught up to her for me to instead be rooted and lose 1/3 or more of my health bar as she continues to whittle me down with her W. If I'm forced to sidestep I lose momentum and either run straight into someone else or have to watch as she zooms away. Sometimes its impossible to even sidestep the feathers, because of how large of an arc they can easily cover. Anyways my main point is that she's designed to be this absolute DPS powerhouse because of her passive and such, but her E lets her completely destroy opponents with the touch of a button as well. It goes against the design.
I hesitate to compare her to Kalista but she really feels like it - hard to catch, has CC, and super punishing stacking damage while also being relatively safe. Certainly not as badly designed, but just about as frustrating to play against.
A lot of streamers I watch play her and she seems really popular at high elos with retired pros like qtipie and Doublelift, who play her often, even over Lucian. She also does really well and can _beat _ Lucian and Caitlyn, which is probably why she's strong in this meta, but the general consensus seems that she's really strong right now and a really good generalist pick like Caitlyn. (her mana costs are also egregiously low) Just wanted to add that here.
If you nerf her damage, what exactly is she even good for?
Her Q is dodgeable. She even has a telegraphed hop + delay before firing them. They will always go in a straight line of where she's facing, so merely stepping to the side dodges it. Every auto attack she does sends a feather in the initial direction of the attack. With that in mind, and the fact she needs 3 feathers to root you means that if you move in a Z fashion she can never ever snare you. To escalate this further her E is designed to collapse like so "V" meaning it's easier to dodge all of her damage by being directly in front of her, and when she does her sweet animation you just step to the side. And yes, it is that easy. This leaves you with the fact the only actual damage she can get off is with her W.
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. Then I look at winrates in OP.GG and loandbehold they both hold higher winrates. Then we escalate this further and look at
and wonder why you'd ever play Xayah when this champ is a bigger lane bully with more utility + a really strong late game curve.