Why does Leblanc's kit feel so disjointed now?

I mean, I guess I might have had a bad game, but it really just felt so terrible to play her. It just feels very disjointed to play, if for no other reasons than wait time combined with being a really squishy caster.

Passive: Wait 1.5 seconds after hitting target with spell. Next spell that hits them will now deal nuke damage. Expires at 4 seconds, giving you a 2.5 second frame hit the enemy if you haven't disengaged or been nuked. E: Wait a bit to deal the second half of the damage and snare. R: Hop in with W so you don't ulti your W on accident. (Unless that's your intention.) THEN scramble to properly sequence your spells. Don't forget to wait 1.5 seconds to cast again for bonus damage.

Mimic: Here's a not-a-clone that won't really fool anyone or make anyone react unless they've never faced Leblanc. Since it's part of Leblanc's core design; Here's a gutted and stapled-on version.

I'm sure she can be powerful given the numbers, but maybe this iteration shouldn't have been rushed out to live. I feel they could've done so much better with her.