Riot at least do this one thing to rankeds the next season
Make soloQ only solo.
There were lots of complaints and suggestions about the rankeds (e.g., my post: https://boards.na.leagueoflegends.com/en/c/gameplay-balance/63d3Gfw8-do-something-with-rankeds ). But if you decide to ignore them, please, at least delete duo from soloQ. Make the soloQ a TRUE display of individual skill.
Just imagine the difference between getting 2 smurfs premade on your team and 2 random pals who decided to play together for the first time. DuoQ being part of the soloQ is just another, unnecessary, random variable determining the victory or defeat.