Miss Fortune rework concept

P: Add an attack speed boost to Strut that is similarly disabled upon taking damage Q: (no change) W: Powder Burn; Passive: Same as Impure Shots passive, disabled when Powder Burn is on cooldown; Active: Detonate all Powder Burn stacks within a very close range to deal a small amount of physical damage per stack. Enemies at max stacks are knocked away from Miss Fortune. E: (no change) R: Instead of increasing stack limit per rank, increase AD scaling on Powder Burn's passive per rank in Bullet Time.

My goals with this kit were to maintain her "hit-and-run AOE marksman" identity while giving her more interesting options without making her overpowered:

• Powder Burn gives her more incentive to generate stacks by rewarding her with an improved escape option, as well as a means to secure a kill at the cost of the passive damage. Thematically, it also draws a small connection to Gangplank's "Powder Keg" ability, and maybe even her explosive destruction of The Dead Pool.
• Adding the attack speed boost to her passive heavily rewards perfect poking and punishes for taking damage by decreasing her own, and allows her to siege turrets as she currently does with the Impure Shots active.
• Trading stack limit for increased AD scaling makes her damage more burst-oriented, which again gives her the option to "hit-and-run" rather than "hit-8-times-to-contribute-anything".

I feel like I've come up with something that would be more fun to play than MF's current state, but I'd be interested in seeing the holes in my logic if I've created something overpowered, even more underpowered, or that goes entirely against her identity.