Lebonkers
Leblanc has it all. Two jumps, with high damage and an additional blink packed into each. Her Q, which still deals considerable damage in the early game and silly amounts later. And then two-chains, which grant tons of cc and far too much rapping skills.
I would propose that the base damage of her jump be lowered at early ranks, so that she cant just oneshot you at level 3.
Additionally, an increased cooldown for mimic would not go unthanked.