A small change regarding Sly sack of gold

Right now, the decision is between "Do I wanna risk getting slightly less gold but also with a potentially larger reward, or do I want a consistent income?" But reality is that using the sack is just objectively better in the long run, which averages at 75 gold instead of 65 (sell price). But even if those two numbers were equal, it's still problematic because this type of RNG is not something you play around. It's just something you get.

My proposal is that at the very least, change the gold gained from sacks. Here are some examples on how it can be done.

Change the value of each sack based on game length, so that it makes sense to hold onto the sack Change the effect so that it gives you X% bonus gold income buff for the next 1 minute, applying to farm, towers, kills, passive income, etc. Make it so it can be only used out of combat, and can be lost upon death

Each of these adds meaningful choice to using