I hate Ezreal but I feel he does need some kind of buff. Though, his low winrate could be attributed to the fact that this is a meta that doesn't favor him; Ezreal doesn't deal well with tank metas. There's also the fact that for a long time, he had an absolutely massive pick rate. Not as big as Lucian's 50% pick rate a patch ago but decently sized. And still now, its 34%. I feel like Ezreal is the ADC that people who don't ADC pick because he's safe and honestly pretty easy.
So I'm not sure if he does or not, in retrospection.
I would like buffs to Tristana; she's pretty consistently up and down with I believe the lowest play rate of any ADC. She extremely reliant on items; the only times she's ever strong is when there are items that favor her. The last big burst of really strong Tristana I can remember was early season 6 when Rageblade was just way overtuned and even then, I hesitate to say she was stellar. Before that, she was strong in Season 5 after her rework but a nerf at the end of that season I feel has made her clunkier. :/ Also, with Kindred getting basically Tristana's passive added onto her kit, I'm finding that there's very little reason to ever pick my favorite Bandle Gunner... Why pick Tristana when Kindred can do the same thing with more mobility and, honestly, safety. Kindred is basically completely overtaking what used to be Tristana's niche; mobile, ultra long range and safe hyper carry with self peel. Now Kindred will be a mobile, ultra long range and safe hyper carry with self peel. :/ Which, as a Tristana main, severely pisses me off.
So with Tristana losing her niche, I would really like to see some looking done on her.
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would like to see this guy reworked into being a adc again, i miss corci bot
is pretty weak atm but im not sure if it's a champion issue or a meta issue
Editting to respond to this: she is fairly weak and it is arguably both a meta issue and a champion issue. Tristana is just clunky in general but then Cait, Lucian, and Draven(all ADCs who counter her) have been strong too. Not to mention Kalista becoming viable once more as well; Kalista can dumpster tristana.
Vayne has a low win rate at the moment as well but I honestly wouldn't want to see buffs to her. :/ She's a fairly popular ADC, even when she's got a low win rate, and when they do buff her they always manage to over do it. And I think her win rate is low due to Draven being exceptionally strong; he can easily handle Vayne in lane and put her six feet under.