Ok, the i got a new idea that I haven’t seen anywhere on sweezy community. Bro-Upgrades! Yes, the bro-coins idea isn’t original and you’ve probably seen it a billion times already but this is the only method that I had in my mind that could work. After each battle, you would get a certain amount of bro-coins. The higher the rarity of the bromon or if the bromon has a buff or if u win in less attacks then the higher amount of bro-coins you could get per match. With these bro-coins, you would be able to buy bro-upgrades! There would be a few different upgrades which I will show you now!
Amount of Bc - 483
Bromon Spawn Rate Upgrade - Level 4/5
Upgrade - 500 Bc
Backpack Inventory Space Upgrade - Level 2/6
Upgrade - 100Bc
Backpack Items Spawn Rate Upgrade - Level 5/5
Upgraded - (MAXED)
Hope you enjoy! @sweezy