Is the new Bloodthirster Viable?

Blood Thirster was my absolute core item with almost any adc/marksman I played. However with the current revamp I feel it is focused more towards marksmen with Attack Speed steroids and low mobility. Before the patch, my main marksman has been Lucian and I just absolutely needed to have either Blood Thirster or Blade of the Ruined King when playing with him. Is it still worth buying either item now?

I understand Blade of the Ruined King is stronger for the late game now than it was before, but I have always built Lucian as a burst champion with a Blood Thirster rush into Trinity Force. Will the new Blood Thirster limit my burst potential? If so, what item should I replace Blood Thirster with? I have tried an Infinity Edge rush right after the v4.10 patch and, while it was satisfying to crit really hard early on, I felt like it delayed my Trinity Force way too much. This meant I was in the back line for a large majority of the mid game team fights instead of going in and out freely, doing tons of damage and just sustain through what ever damage I took.

I basically want to know if there is a replacement for Blood Thirster and, if not, how should I play with the new item that favors Attack Speed steroid Marksmen and champions?