OK I'll be completely honest.
Kitana is...flawed. When you see what almost the entire cast can do, whether it be pressure, mixups, oki, good normals/strings, etc, then see what Kitana can do, it's pretty disappointing. Almost the entire cast can overwhelm her with pressure, a lot of characters outfootsie her, and a lot of characters can shut down her game. It pains me to say this, but I've been doing better with Cassie and D'Vorah, even tho I'm doing well with Kitana. It just feels much easier to play the game with those two.
I know she's meant to be a defensive character, but her defense isn't strong enough to deal with alot of the characters. The zoning is good, but once people start playing a ground game and just walk and duck, things get bad. Her reversals and armor are good, and set up the zoning game, but once its blocked, she gets bodied. She's almost helpless against people like Kang and Cassie once they get in, due to her lack of good pokes and strings.
But with all that being said, Kitana is and always will be my main character. Even with all the struggle, it just forced me to become an extremely defensive player, and that's how I've been doing well against a lot of people as of late. I'm not saying she's the worst character in the game, but she's definitely not a contender for the top 10, maybe even 15. I'm just gonna ride it out. If she ends up low tier, so be it. I'm still gonna enter tournaments with her and do my best.