Vayne main's opinion on the nerfs, including on Riven
Let's start with Vayne, because I'm more familiar with her.
Quoting Jatt: https://www.reddit.com/r/leagueoflegends/comments/bjmakj/51_pbe_update_loot_assets_idahotb_asset_more/em9smbb/?context=10000
I can see how this looks bad haha.. we're not planning on compensating Vayne for rageblade nerfs.
The Vayne R CD should be back to live values tomorrow on PBE. It was leftover from some other changes that we were trying out that would have been harsher nerfs, and had an R CD buff as compensation.
The only thing that should be different from live Vayne on PBE Vayne tomorrow is her Tumble CD reduction during R going from 50% at all ranks to 30%/40%/50% depending on R rank.
FWIW not trying to nerf Vayne that hard. She's around 51.5% winrate now, so don't want to go overboard. In a perfect world the rageblade nerfs and the tumble CDR reduction leave her around 50% -- but less frustrating to play against (since her ban rates are quite high in most MMRs). If she stays at exactly the same ban rate while sitting at slightly lower win-rate -- then the changes didn't work, and we'd have to adjust from there.
With the Guinsoo's nerf and the Ult cooldown nerf as the only planned changes (to my knowledge), I'd like to comment on them.
First of all, the Guinsoo's nerf makes sense because it's a damaging item for the health of a game. Many abuse cases hinge on this, and despite Rageblade not being nerfed specifically for Vayne, it'll definitely hit her power levels for her on-hit build. That being said, I hate this change because there were no compensational buffs for champs already doing poorly using it as a crutch. Kog'maw and Varus spring to mind instantly, and Kai'sa has received an unneeded nerf as well.
Second, the Ult Tumble CD nerf is fine. Having its power levels nerfed isn't a huge issue to me. It makes sense for her to have a weaker early game in exchange for powerful dueling power late game.
Finally, her W power levels not being directly touched make sense to me.
I feel like the Guinsoo's nerf is definitly the one that'll hit On-hit Vayne harder. I forsee people going BotRK -> PD/Shiv -> IE, or just rushing crit items much more often, and when Vayne DOES go for on-hit, it'll definitely be weaker.
Her W doesn't need an additional nerf on top of that, because the Guinsoo's nerf already hits the W to a place where it'll be on-par/sub-par with other options.
The Riven Nerfs:
Broken Wings (Q): Cooldown decreased to 12/11.5/11/10.5/10 seconds from 13 seconds at all ranks. Valor (E): Cooldown increased to 14/13/12/11/10 seconds from 10/9/8/7/6 seconds.
No.
I don't get why they didn't just nerf her E. By decreasing Broken Wings' cooldown, all that was achieved was that Riven now has EVEN MORE offensive prowess. Riven maxes Q first, and by reducing its cooldown from 1-3 seconds, you made her already strong early game intolerable. I get that this was aimed at nerfing her mid-game, but a fed Riven isn't going to give two shits about her powerspikes. She's going to skip her midgame and go straight into lategame.
Even when not fed, by decreasing her cooldown on Q, it makes for even more autoattack canceling, and makes trading patterns extremely difficult against her. While her defensive viability is reduced by a solid 4 seconds, she still has her dashes on her Q, because those are dashes too.
I forsee Riven building exactly the same way. Her winrate might drop slightly, but she's going to be even more FRUSTRATING to play against.
Again, I know safety is a huge thing in super high elo, but please consider everyone else too.\
TL;DR:
Vayne is successfully nerfed, but there was collateral damage onto champs that relied on a broken item as a crutch.
Riven was not successfully nerfed, and is a situational buff.
