Sivir Buff Idea

I realize that Sivir isn't in a terrible spot (sitting just under 49% winrate for the past 7 days in Plat and Diamond on op.gg) and she received buffs in the past patch to her W's AD Ratio. This is just an idea for a possible buff in the future if it seems like she needs one. The buff is simple: allow Sivir's W ricochets to crit. They would not apply on hit effects, and the crit damage could be reduced if need be, but I feel like this buff would increase Sivir's damage in a meaningful way (that rewards her for auto attacking) without drastically increasing her early game power, while also solidifying her as a waveclear ADC. This change would synergize well with both Statikk Shiv and Essence Reaver, as it'd allow for her to waveclear incredibly quickly while also letting her spam her spells more often.

The damage (at rank 5) would be 1.6 AD Ratio for a regular W crit, and a 2.0 AD ratio for a crit with IE (effectively the same as Sivir critting on a regular auto attack without Infinity Edge).

Thoughts? I realize that this may not be necessary with her current state (possibly making her too strong) but I feel like if she's in need of a buff in the future it'd be a decent route to take.