Why would we nerf the damage on Shiv and RFC? Just make them not stack.
You're gutting IE and making ER better. Just reduce the AD by 10.
Rework ER with 20% CDR always and 10 less AD. Stop making it a massive CDR stick for late game carries like Xayah and Sivir and actually be a viable option on Lucian and Draven.
Last Whisper to 1400 gold, building out of Pickaxe now, and giving 30 AD.
Mortal Reminder and Executioner's Calling removed from the game. (Replace it with something else. Actually balance healing or you're a shitty designer Riot)
Actually, fix the fact that LDR is balanced around tanks making the non-armor stacking, but HP stacking bruisers completely melted.
Not a marksmen change but make Conqueror not balanced around being an anti-tank keystone. Also revert BC.