Sivir Rework Idea!

I've had this idea with Sivir for a while now, but I never shared it, deeming it too absurd for acceptance. With the new autos that Graves was given however, I think this rework suggestion would sound a little less crazy now. Here's what I purpose:

Auto Attacks: Sivir's autos bother me, as I don't understand how she keeps conjuring up infinite boomerangs to throw. (Oh, you where I'm going with this!) Her new auto will become like her current Q. She throws the blade to her target like an auto attack damaging them (locking on them like an auto), along with any enemies caught in it's path. Then, It'll fly back to Sivir dealing a second round of damage to her target(s). This attack can also crit and apply on-hits, to and fro on her target as well as anyone caught in the AOE. Her autos are now AOE and deal its damage twice to the target, so how is this fair? The catch: SIVIR CANNOT AUTO AGAIN WHILE THE BLADE IN IN FLIGHT! Additionally, physical damage to the first target hit and 15% reduced damage to each subsequent target down to a minimum of 40%. This mechanic will be further justified later. (This does also mean the closer her target is to her, the faster her "attack speed" is). Additional notes: If blocked by wind walls or shields of any kind, the blade will simply fly back to Sivir. It'll do damage if anything touches it though.

Her new Passive: Fleet of Foot The passive will have 2 parts. The first part will be like her current passive: Sivir gains movement speed while her blade is in flight. The second part will involve attack speed. Sivir's attack speed will now no longer affect how fast she can throw out the blade. It won't even increase how fast the blade flies, but here's what it does: Sivir's auto attacks deal bonus physical damage scaling with her BONUS attack speed! (It's kind of like Ashe's interactions with crit chance). This of course is to compensate for her inability to auto very quickly. This damage will only work on her initial target however; Any enemies caught in her auto attack AOE will not take the bonus damage.

Her new Q: Ricochet Blade Here's where things get even crazier! When activated, Sivir's next auto will fly to her target like her normal auto, but then it will begin bouncing to multiple targets, applying crits, on-hits, and her passive damage (bounce damage will not fall off!). These bounces will be like the brand ult, it'll prioritize champions, but can bounce to minions when no other champions are around. This makes trading with Sivir in your minion wave extremely dangerous, as her bouncing blade will continuously bounce off the minions and onto you (like brand ult!). Also, Ricochet Blade will try to hit a champion only once, bouncing back to a same champion when there's no other untouched champions to hit. The blade will fly back to you when it has completed 6 bounces, or there's no champions in range to hit, ensuring the blade will be ready to use as fast as possible. Yes, while the blade is bouncing, you still cannot auto attack, so you better use your passive movement speed very wisely!

Her new W: Boomerang Blade When Sivir activates this ability, her blade no matter where it is, will turn and fly back to Sivir. Any enemies caught in that return path will take super heavy physical damage! To help with this challenge, this you'll have arrows that follow the blade so positioning will be a bit easier (Similar to the arrows on Yasuo ult). Boomerang Blade can also work on your auto attacks for some quick targeted damage. Sivir will be VERY reliant on positioning because of this ability. Lining up a good boomerang after sending the blade into the enemy team with your Q will deal so much damage to everyone, and will feel extremely satisfying!

Her E: Spell Shield: Nothing changes here!

Her R: On the Hunt: This stays the same as well!

So it's clear what kind of champion I'm thinking of Sivir to be, an AOE adc who's extremely reliant on positioning. Although her last-hitting will feel very weird, she would be very powerful during the laning phase. She can auto her enemy laner when no minions are in the way to reduce the auto's damage. Since the blade does it's damage to and fro, this is very deadly targeted poke. She would excel at team fighting thanks to her enormous AOE potential. She could throw out the Ricochet Blade onto the enemy front line and have it bounce onto their back line, and positioning herself for a sweet Boomerang Blade setup, while keeping herself safe with her passive and ult move speed, as well as her spell shield. Sivir's weakness would come in dueling. Unless the enemy is standing in waves of minions to Ricochet, You won't be able to dish out damage fast enough to kill them.

I hope that these concepts would at least be acknowledged, for I really think this skill set has some sort of potential. What you guys think? Any numbers you would change? Or is this concept too absurd to exist? Just a fun thought I had the other day :D