Rework Locket.
in the lcs,in solo queue everywhere tanks that build locket and knight's vow,this is probably the unhealthiest feature of the game,instead of using timing and the tanks being the frontline of a fight everyone rushes in a clown fiesta using all of their abilities as soon as possible,waiting to see which adc survived to see who won the fight. using timing and catching a carrry off position is what rewards good players and punishes bad players in league of legends,the amount of shielding and healing make all of these obsolete.
punishing an oriana player who landed a 5 man ult by giving zac the ability to shield his team for a big portion of the damage is unfair and punishing to good players. At least redemption has a delay which makes it more fair in teamfights.