These "Increase To 10 Bans" Anti arguments are bad
Do people seriously think your team and the enemy team will spend all their bans and picks just to take all your champion selection? (Unless you play just meta champs)
First solution:Increase champ requirement to play draft or ranked to 20, you get 20 mastery pages after all
Second solution:in the EXTRENELY RARE case that your whole champion pool is banned, match is cancelled and you get requeued
Flaming In 3,2,1.....
and just flat out broken. 
and
, you started seeing different junglers such as
, all people who are barely, but still played in competitive league
. Of those 10 champs, 3 of them are potentially worth banning for being too strong. The other 7 are merely "I find this champ annoying and don't want to play against them" bans. And frankly, champs should never be permabanned simply for being annoying to face because what is Riot supposed to do with a permabanned but balanced champ? Nerf them anyway? Leave them permabanned until a rework that likely won't get them out of permaban jail anyway? Just ignore it and hope it goes away?
. Not because she's OP, not because she's FoTM, but because he didn't like her and the champion he was going with (don't remember who it was) struggles against Ahri. Another game the enemy banned Soraka and Sona, then ran a poke comp in bot lane.
etc...
Longer range ADCs?
Healing supports?
(Though so many give sustain level shields that this might not even be a point.)
You can pick from these still. Braum Janna and Alistair are far from piddy weak. Bard isn't bad in the right hands Lulu and Tahm are seen pretty often in the LCS as well.