I don´t see a point picking sivir at all
might as well rework her into something with a niche that is not outclassed by 
Coming from a game where i had to support a terrible sivir ( so a bad player on top of an already bad champ ), which reminded me how aweful she really. First it was quite frustrating, but as the game progressed it became kinda hilarious how she made it possible to lose even super safe kills, because of how little damage she did. What made it even funnier is that we ( my premade and myself ) already predicted in champselect, that she will deal the least amount of dmg in our team just by her pick, and she did.
since i am no adc main, i am genuine corious. Why would you ever pick her over champs like
twitch has better teamfight and is actually usefull at lvl 6 onwards
jinx can help u in lane chain cc the enemy and can pick up kills with ult, while having a as good if not better teamfight
kog´maw´s early is actually ok now.
Draven is just a huge lane bully, that snowballs insane
vayne, even though she deals single target dmg, she scales way harder and is a god duellist
every adc can have waveclear with
and every team can have a speedboost with
, so whats left is just her spellshield, which makes her a pocketpick against hard engage lanes like
i guess?