i know how to solve the problems with ranked.
make players that constantly have poor kda or low inhib/turret kills win 50 normals every 3 losses in a row. also dont mix and match rank: example team 1=b1, b3, s5, b4, s5 while team 2=b2, s3, s5, b1, b3...... which team do you think wins? exactly.