The ranked matching system is horrible at best
Ranked play in League is probably the most fun and at the same time the most frustrating game experience there is. I like playing competitive games but I also like playing with and against people around my same level of play.
The matching system has too broad a skill difference. It's common to have iron and silver players on the same team along with people who have a consistent record of giving up lots of kills.
Too many games in the solo/duo low MMR bracket are decided by a coin flip. Matches boil down too which team has the least amount of bad players instead of which team played better. If you're team has 1 feeder and the enemy has 2 chances are you win even if you don't play very well and vice versa.
It seems to me the queue system just pulls from a broad range of MMR in order to make matches quickly. I'd rather wait longer and have better matches then have a short wait and have the game be decided by a coin flip.
Also you can't see the MMR formula. That seems shady and like Riot is trying to hide something. No reason we can't see the MMR formula unless it's just bad and Riot doesn't want to improve because of the above mentioned short queue times.
Also as a side note there is no need for more than 1 provisional and a soft reset. Which is hardly soft because you go down an average of 2 leagues. That's really just a tool to take away what players have earned and keep them grinding.
You could get a lot more players and keep people playing by simply just fixing the broken matching system. Perhaps I'm asking for too much but there's my two cents.
Happy leagueing :)