@Riot Change ranked requirements.
From the new season changes, all sunmoner spells are unlocked at level 9 and all rune options are available level 19 onwards, therefore there is no reason to keep people out of ranked post level 19 given they have enough champions to pick/ban from (20)
This streamlines a couple of things: it allows for people under level 20 to play clash, it allows for streamers and people who are willing to buy champs with RP an easier time into ranked games, and overall reduces the arbitrary level limit ranked queue currently has
Edit: Okay, the number one concern people seem to have is that "these new players aren't ready for ranked, so they'll just drag us down as we try to climb out of whatever division they are placed in." My response to that is you're more likely to be quenued vs said players than with, so if anything this benefits your climb (5 on enemy team vs 4 on yours)