Ranked problems

The problem with the new ranked system with having new ranks in different roles is game knowledge . Starcraft 2 did this about a year ago and it was the reason i stopped playing the game. Players with a higher understanding of the game in lower elos in a different role just makes the game unbalanced. diamond mid laner but in bot lane is silver three? do you see the issue i am presenting? In starcraft 2 the did the same thing but with the different races. Game knowledge was the biggest problem. I was a diamond SC2 zerg main but would go up against silver protoss when i went up against other protoss players i would role them over even though i didnt know the other race that well. Riot should look into this and actually compare ranks from other roles and still match make other players that are around the same level of play even if their other roles arent ranked as high