Riot can't balance for Shit
How hard is it to rework champions. Not that freaking hard. The community is telling riot what works and what doesn't and they refuse to listen. They have totally different ideas than we do of what a champion should and shouldn't be able to do. We have crafted and abused champions to fit the lane they should have been in to begin with. Riot doesn't like this. They want us to do what they intended the champion to do so they gut that champion. They simply will not allow champions to break the meta they imagine. Here's an example. People used to complain about fizz all the time then ad fizz blew up and was overpowered. We complained more. What they did was horrendous. They nerfed his ad side and buffed his ap side yet noone Complained. Ap Fizz was stronger than ever but his play rate dropped because ad fizz was no longer viable. We were left with a super powerful champion because they didn't want us to change what they wanted him to be. They have done this to other champions as well that went in the opposite direction and nerfed them to the ground and left them with nothing. Example sion, sejuani ect. Meanwhile champions they love too much to nerf (Yasuo, Lee, zed) remain at large and will never fall off the meta.
Rarely though they do embrace our meta changers. Example Morgana and annie support. Meanwhile they nerf lulu because she wants to go mid.