Hello, I don't like using Golden Eggs all that much (weird, I know) but still enjoy completing every checkmark as every character and thus have accumulated quite a bit of gold.. so I thought: Why not have a ressource sink other than Golden Eggs?
But what should it be? Imho the coolest and least gameplay-influencing would be something akin to what Hades already implemented:
https://hades.fandom.com/wiki/Resource_Director
Just have some sort of menu or ingame UI elements that gets upgrades with fancier visuals as you continue to sink more and more gold into it. Why not the menu where you select new weapons and passives as you level up?
What do you think about it?