I kinda liked both states of quinn. But ever since this year due to the lethality changes, she's becoming quite powerful. And riot never even touched on her. I thought last season, I was the only one playing quinn, (she carried me to plat) but now everyone is playing her :L
And as for valor, I think he still exist. Part of q and passive, and since e creates the passive on target, he's still quite 'helpful'. And as for ult, I actually liked this ult's better tbh. Both ults require to pick off champions instead. I use to use old valor to pick off champs in team fights but then I would immediately die after and cost the game basically like old rengar (still remember going 22-9 in that game). Here the new ult, the only "way" to counter is never going alone and usually have 2-3 people besides you. Its basically like going against a roaming TF.