Objective Points
im only in low silver and as such i lose alot of games when you were dominating early game. the reason why though, is because people are so impulsed to get a good score. while that is normal, they focus more on their kda than the objectives of the game. so what if they input a system that gave out points depending on what was done in game instead of just kda to make people more aware of their team contribution. heck ive had games where the nexus was open to be destroyed with teammates standing beside it, but they w8 for the enemy to spawn to get more kills, only for the enemy to kill them push and win the game.
for example: 2 points for kill 4 points for outer turret 6 points for epic monster 6 points for inner turret 8 points for inhibitor turret 8 points for inhibitor 10 points for nexus turret 15 points for nexus
half points for assists (except if enemy team steals epic monster)
this way there is a new way to judge team contribution. for example someone who has 20 kills from being with the team vs someone for example pushes top lane all game and destroyed everything from outer turret to nexus (20 kills = 40 points but pushing top from outer turret to nexus has 61 points) but of course the points in the example are just my suggestion. As well you could link this to champion rankings.