I don't think ahsoka needs any changes to her attacks and her passive just needs a zeta, not a full rework. That zeta should read something like "gains 50% max health, 50 speed, 20% crit chance, and 50% counter chance losing those effects in reverse order for each critical hit taken." There's really been a trend going away from crit based teams (i.e. Nihilus lead) and making this little change will really keep an element of strategy in the game.
She also needs a full rework on her leader ability. It's a joke.
Other than that nice ideas