@Meddler Will we see another adc that relies on his teamates like kalista ?

if they are anything like Kalista it should not be added

I hope not.

Sure if they can't solo carry like other marksmen, that ruins the point of relying on teammates. Which makes me wonder how she got passed in the first place.

Kalista is an ADC that is meant to play into Teams. As in: objective control, initiation, and kiting around teamfights. It makes her a prime marksmen for 5 man queues or even a duo'd bot lane where they're playing together or on some sort of voice chat. Kalista isn't meant to be a solo carry champ.