New champs, same problems

Ok, I have a problem. Every time a new champ comes out, a bunch of players start to pick it in ranked; I'm sure some of these player could be good on the champ but is impossible to play a new champ on the same level of their main champ. I'm plat 2 and if someone pick a new champ the game will be lost. this happen in every elo. couldn't riot block people from picking new champs in ranked for at least 2 weeks. so that the players that want to use them first can learn in normals without affecting ranked games of other players. (did my best sorry if I made some huge english mistakes) Want to hear some thoughts on this matter.
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