Itto teams are so fun. I'm using the same one as you except with Albedo instead of Zhongli.

Sure, Kuki's not amazing there, but she's a solid Tenacity holder which benefits Itto somewhat, and her healing is perfectly fine even without Zhongli because Crystallise shields can take more damage than people give them credit for, especially when Itto is on the field with his monumental DEF that makes him take much less damage than other characters anyway.

Itto's combos are just so damn fun. When you're fighting a stationary enemy that allows you to pull off your full optimal combo it feels so damn satisfying, but even when you can't do that his combos are so fluid that you can improvise on the fly and it still works. It's partly why even if it were an option to me I genuinely wouldn't be interested in pulling for his C6, which gives you a decent chance to drastically extend your charged attack combos. To me, the improvisation and combo creativity is where the fun of playing Itto comes from; to have that taken away in favour of RNG unga bunga doesn't sound appealing to me.