As a Rank 6 Riven main I can say you probably won't see that much more of her, let's be honest here this Meta is all about people that can crit your face in......and Zed, it's also about Zed.
(Mumbles Fking 
)
Edit: In my personal opinion in what I think it would take for people to start picking Riven again is if Riot ever makes an AD version this ->
(Please don't)
legionnaire991 votesi mean armorpen idems are better then crit on adcs 
RaptorKarr1 votesAshe would like a word with you.
legionnaire991 votesAshe would like a word with you.
she can't crit it's makes her slow worst ( i'm not saying riven isn't in a bad spot she is)
RaptorKarr1 votesThe more crit Ashe has the more Damage her passive does and the more likely her passive is going to proc.
legionnaire991 votesThe more crit Ashe has the more Damage her passive does and the more likely her passive is going to proc.
her passive proc is 100% of the timebut i didn't know it made her do more passive damage
RaptorKarr1 votesThats why she doesn't crit
Rain NT1 votesnope, the more crit she has, the more damage her AA does, so its never random, she always has consistence damage the more crit she has.
TheDevice1 votesRiven has a 10% pickrate...
Why do people say she isn't played? Why?