User blog comment:Nhan-Fiction/LEAGUE OF LEGENDS MUST EXPAND ITS BANNING PHASE/@comment-1330314-20160401055738

I agree, ranked League would likely be a lot better with 10 bans, and I think the most convincing argument is that, as you mentioned, it would give each player an opportunity to ban a champion, instead of putting the whole banning phase on the shoulders of two players who may or may not agree with their teammates. I'm not familiar with Dota 2's ranked play, and I imagine there are some differences that might be hard to bridge (namely, Dota 2 giving all players full access to the hero roster from the get-go, as opposed to League locking out its champions behind a price tag), but Captain's Mode's pick and ban phase looks perfect, and something League could definitely replicate. Thoughts on your individual points:
 * I'm not a big fan of #1, mainly because I'd rather there be consistency in base draft mode mechanics across all elos, including the number of bans. There's already an incentive to play Ranked due to the prestige associated with higher divisions, imo, and if it needed more rewards, more bans would probably not be the best approach.
 * Completely agree with #2. Bans should be about strategy and player-to-player control, not locking out whichever champions are the strongest or most unpleasant to deal with. More bans wouldn't directly solve this, but would definitely better allow teams to try and counter each other's team comps while protecting their own.
 * I agree with #3 too, one of the current factors rendering competitive play less interesting than it could be is that pro players tend to lean far too heavily on a small handful of picks that they've been mastering over months or years, rather than a larger roster of more diverse champions. More likely needs to be done to encourage creative picks and comps in the competitive scene, but more bans could definitely force pro players out of their comfort zone more often.
 * #4 makes sense, though I feel a lot of less popular champions, such as or, might just be countered by too many champions to rise naturally. In any case, more bans wouldn't harm them, and if it helps them see more play, then all the better.
 * Completely agree with #5 as well, bans should not be used as a last resort against unpopular or unbalanced champions. There's probably more to this, and I feel some champions may be overly banned out of memetic hate or excessive replication of pro play, but ultimately bans should be strategic, and currently they're not, which may call for more than just additional bans, but wouldn't be too affected by such a change.