Possible Suggestion for FQC nerf

I think this nerf is unique in the fact that I'm not actually nerfing FQC. I'm not technically not even changing anything with the other starting items.

My proposal: Make all minions give 3 less gold.

Doran's Ring, Doran's Blade, Cull, The Dark Seal, Corrupting Potion and Doran's Shield all get a new passive: Killing a minion grants 3 additional gold. This item stacks with Avarice Blade, but otherwise counts as a gold income item.

To compensate, the gold scaling on minions should be increased so once the starting item is sold, gold income is about the same.

So, if this were to be implemented, Spellthief's Edge takers would get less gold from last hits, which doesn't affect supports at all. Gold income for everyone else would stay almost the exact same. The only real difference is junglers clearing minions or supports taking cs when the ADC is gone. It's also not viable to take Spellthief's after the starting item since you no longer get extra gold, as they wouldn't stack.

So please, what would be possible unintended side effects of this? Would this imbalance the game? Or does the numbers need changing? Please, tell me.