need more than 3 bans
as the title states, we need more than 3 ban choices per team,the amount of broken champions are escalating at a faster rate than your able to nerf or balance the game, i suggest more than 3 bans per team, perhaps 6 bans per team, to deal with the issue until you can get the wild fire under control.
if i was a dev, my first priority would be tanks who deal damage, specificaly tanks who can build entirely nothing but tank items and still be lethal.