Riven's gameplay pattern is similar to Akali's (it lacks meaningful counterplay)

Among all of her problems, to me, this is one that just absolutely blows my mind. You have a champion that presses R, gaining a massive amount of AD and range. And if done correctly, she's able to pull off her entire combo in 0.9 seconds and 100-0 anything squishy, and still probably killing anything remotely durable. There's legit no counterplay to this. None. She just presses R, flash + stuns and absolutely wrecks you. People talk about Akali's biggest flaw as a design is there's no gameplay, which is true. You either out-tank her and kill her or you manage to burst her, if you don't accomplish either then you die. It's really no different with Riven except against Akali you can cast spells. Riven can cancel both your spells AND auto attacks so even if you're something with access to durability (Nasus/Ren ult, Jax ult, etc) you don't even get an opportunity to accesss it until you are half health because she's stunned and combo'd you and you can't trade AAs because of the steroid on her ult. It even has virtually n ocooldowns. Why is this allowed? Why am I not only unable to outdamage her but I'm also unable to cast spells because I'm chain cc'd while dying quickly. We removed silences for this on champions like Kassadin and LeBlanc because there was no meaningful way to fight them back. This isn't different, a kit lie Riven's with the steroids galore should, at bare minimum, have some type of delay on her CC so that she doesn't either mitigate massive amounts of damage or deal too much damage for me to handle whlie stunned and I have to be afraid of the AoE executes. Don't even suggest to "just engage on her," because that doesn't work. She has just as much disengage as she does the potential to engage so even when you try to do this, you still get out-traded without being able to damage her. You basically have to wait for her to fuck up. There are small windows of weaknesses in Riven's kit, much the same way Fizz has this problem. These weaknesses pale in comparison to how oppressive their strengths are and their vulnerabilities aren't nearly as close to exploitable compared to how much raw power thye have. Bottom line is this, Riven is a champion that seems to bet nerfed every single season and we are 5 seeasons in with it still being a problem. Something needs to be done, I don't care that high elo Riven mains think she's fine or try to tell you she's balanced. There's just as many high elo players, if not more, who think she's complete bullshit. Redidt white knight heroes just constantly try to jerk her mains to death and nobody wants to do anything about it. Riven is a champion that currently abuses mechanics in the game that you've addressed in other forms with other champions because it lacked meaningful counterplay.