Towers
Turrets should deal penetrative damage and the damage should not be scaled like 150/180/... something like that, It should deal same damage to everyone for example If It is going to blow half your hp on 3-4 shots mid game while you play Assassin/Adc/Fighter It should blow half the hp of the tank too. Adaptive damage on towers will eventually stop those Garen bois who run around not knowing even what is tower :D