I didnt try building the new crit items on her as my first items,i felt like the build path and the prices are now just absurd when you can get similar results going the other way around. Also i realized that i should start playing the game the way i felt best,not the way my teammates or mobafire tells me to do. One of the biggest downsides for any ADC in my eyes is the pure shit feeling of being the squishiest on your team,getting oneshoted often or just chunked for 50% hp by a poke spell.
Thats why i loved the Korean Lucian
, Korean Ashe is similar
Now they changed BC since then quite a lot,it used to give more dmg and arpen and less hp,but its still a viable item now,it costs 700 less than an IE and only 100 more than the zeals while having much better build path.
So i've been going
on her and then just crit,its a solid build,your Q gives 5 stacks of BC on the target in ONE shot,there's no one that can stack BC faster than her,you're gonna have easier time winning fights early because of lifesteal and more hp,the bonus MS coupled with your slow is amazing,if someone jumps on you you even have your botrk slow,and even though LDR is now good again,the difference between them is only 10% armorpen that works only for you,going Black Cleaver + PTA and you can make the enemy weaker for everyone on your team,not just you.
Personally its all about playstyle,if you want to trade some damage for some hp try this out,it maybe wont do the damage that IE Runan would,but it will come close,while being able to apply that damage more freely,not worrying about every spell one shotting you