A cool idea I have to make Janna tornado more satisfying

Tl; dr:

BUFFS - INCREASED DAMAGE GETS WIDER AS IT CHARGES CHARGE TIME FROM 3 SECONDS TO 4 SECONDS INCREASED KNOCK UP FOR EACH CHARGE SLIGHTLY INCREASED RANGE ON INITIAL CAST SLIGHTLY DECREASED COOLDOWN

NERFS - LESS DAMAGE FOR EACH TARGET HIT LESS DAMAGE FOR EACH CHARGE SMALLER TORNADO ON INITIAL CAST LESS KNOCK UP ON INITIAL CAST LESS RANGE FOR EACH CHARGE NO LONGER STARTS COOLDOWN ON INITIAL CAST

Here's an idea I had in mind for Janna. While Janna's tornado is very powerful right now for its disruption and utility, it doesn't exactly feel like a tornado. Sure, it knocks up but it doesn't exactly feel like one. You know what I mean? This change actually makes it feel like a real tornado, making her feel like the Storm's Fury she was meant to be. While these changes seem a bit drastic, I think they would make Janna more satisfying and more interesting. But what do you think? Would it kill her, make her broken beyond belief or just right?