Why can't we up the ban amount to 5 per team?
Distrubute the bans so that every team mate has one ban. This way everyone can ban for their lane and not have to rely on their teammates to ban who they think is OP or needing bans. If you think this is too much, then maybe eight bans, so that every lane gets a ban, and the support just misses out. This would also encourage people to think, do I want to ban a powerful ADC? or a powerful Support?
is banned 85% of the time according to champion.gg, but has a 55% winrate whenever he gets through top and 54% when he is jungle. Thats a pretty solid ban.
has a 10% ban rate, but has the 1st, 2nd, and 4th highest winrates (top, adc, and jungle respectively). Another solid ban.
has a 23% banrate, but even when left through has a 46% winrate. This champion, who has the 116th highest winrate out of 128 champions, is banned twice as often as the highest winrate champion.