She is currently at a 38% win rate in diamond. This means she has a larger gap from 50% than warwick does. She's worse than warwick is good atm. She's below 45% in every bracket. She currently has the worst win rate in the game, and has one of the worst post first week stats in the history of the game.
What does she need?
nothing.
You know that feeling when you play 
, and you throw out a lantern for a great play, but for whatever reason your ally refuses to click it? Multiply that feeling by about a hundred and you get the experience of using 
's ult. In team games, it's not a huge problem since you just tell the other person with voice chat when you're about to ult and what you think they should do with it. Teamwork OP.
In SoloQ, where a lot of players play, giving any amount of control of your champion to your teammates is laughable at best. You can't trust the other person to make the same play you see. Hell, you can't even trust them to know what to do when ulted as the person has no warning when it's about to happen and it can be jarring if you've never been the soulbound before. Champions that rely heavily on teamwork and cooperation suffer pretty heavily in SoloQ, and Kali is one of those.
My experience in playing against Kallista is that it's extremely easy to land skillshots on her. I expected it to be harder because she's mobile, but really it's like having future sight.
I think she's going to have a junk laning phase no matter what they do. As a result, I think she wants to become more Vayne-like, with a focus on late game hypercarry status.
It's mostly because people either don't know how to play her yet or don't know how to synergise with her yet. you have to give people time to get good at the champion. plus there are a lot of champions that are very strong right now that need a bit of balancing so maybe these kalistas are just getting unlucky and have to face those champs....... or the kalista players are bad xD
Give it a few months also i dont think theres much you can do withiout making her overpowered
She's getting a buff to her E damage (base and scaling), and she's getting a buff to let her E restore mana if she last hits a minion with it (she can get mana back from 2 minions at most per cast and doing so will give enough mana back to negate the mana cost). There will also be a W change to make it slightly easier to last-hit a minion with it. Hopefully, the bug with her and Targon's will be fixed too.
she needs nothing. she has a distinctive niche in champion select and a fairly weak laning phase. she's not a great solo queue champion. she's also new and has a high learning curve which is hurting her winrate. as a champion she's fine
