Release a pure solo queue system with its own matchmaking rating, 10 random players, divided randomly in 2 teams.
Remove bounty system: The bounty system punishes good players who snowball.
Death Timers: Death timer should be based on how many times you have died, not how long the game has gone. First death 5 sec, second death 10 sec, you got the idea. This way, good players who play safe are rewarded.
Bring back wards: The trinkets are not a good substitude, bring back proper wards and vision items.
Remove any build (keystones/items) that allows a champion to be extremely tanky and deal high burst/sustained damage. If you have high damage, you should be squishy.
