A Tristana nerf concept, Write Your Thoughts

Before we go overboard with demands, or something worse that has adverse effects on other champions, let me throw my concept in to the ring. What I see as the best form for Tristana is adjusting the cooldown reduction of her W (on kill/assist) from 100% to 50%

That way, not only does Tristana not lose much in terms of mobility, damage, or viability, but we never have to touch anything else for at least half of this season. What do you guys think?

(No rank discussion please)