ways to amend on pick/ban phase in competitive play to increase chance of rare champs show up
From season 3 to now, competitive play's champion pool are always almost the same, every patch, almost 90% of the competitive plays' champion picks are the same. Even for this season the ban number is increased to 5 for each team, the picks are still similar among different games, for example, from "camile+mao kai+ryze+leblanc+varus+ashe+jhin+jayce+renger+mf+zyra+malz" to "grave+elise+rumble+gragas+renekton+naut+ez+ashe+lucian+lulu+karma+malz+orianna+talon+ahri+thalia" for now, the champions shown are just changing depends on which of the mentioned are banned, but those who are "not in meta now" are never going to show up, resulting in similar picks every game.
I think that a new change in competitive game mode is needed in order to increase the variety of champions being picked in competitive play. The method I have come up for now is that each game before ban phase, each team can lock a ("out meta") champion for the opponent team, which those champions cannot be banned and each team should quickly come up with how to form their team combination with that champion and what work well with opponent locked champion and needed to be banned. For BO2 and more, the locked champions chose at the next game cannot be the same as any of the locked champs in the previous games or even cannot be any champions being picked. This method can guarantee that for BO3, at least 4 different "rare" champs being picked and 6-10 different "rare" champs being picked in BO5. I think that a way to** guarantee different "rare" champions able to show up** and perhaps when those rare champs may perform outstandingly in pro play can definitely enhance audience enthusiasm in playing non-meta chmaps and increase audience interest as there are more different team combinations.
Hope everyone can give some feedback on this amend of pick/ban or provide other methods of pick/ban which can let more champions able to show up in competitive play while the pick ban phase can remain stragetic.