I’m thinking that every time we defeat a “Rare” Bro-Mon, we should earn a Unique Power-Up to use in battles… something more exciting than just health power-ups. These tools would grant extra superpowers! The power-up would depend on the Bro-Mon we defeat, and the rarer the Bro-Mon, the stronger the ability.
For example, if I defeat GrumpBlob, I could earn a power-up called “Blinding Goo.” When used, it would make the opponent appear blinded, causing them to miss attacks and take little to no damage!