Why would you ever nerf Tristana?
https://i.gyazo.com/d8a7f1f5387d3d01737af7f2c70b4241.png
right? why would you ever nerf her Q attack speed or anything?
just give her -25 range but buff her passive range, and increase her W damage by 40 at rank one which is just a ~~70% damage increase to make her even more obnoxious in lane
it's not like she can already kill you in one trade if you get cc'ed or all in'ed because her ult deals 300 MAGIC DAMAGE AT RANK 1 and her ult still allows you to queue one autoattack during the cast animation something that was removed from vayne
it's not like the 2nd most played adc needs a nerf this isn't your darius/xin/whatever, she can't just be straight up nerfed she will need a buff compensation
damn, here i thought we were moving in a good direction with 8.4 but let's make tristana a lane bully hypercarry
lol
own their lanes far more than Trist does, unless you give Trist 
tend to build
so they have a lot more sustain than a Tristana (secondary attacks add to life steal)