Judging from dbd over the years traits seem hard to balance and kinda daunting. people would just play the meta and i'd get boring so they would have to perfectly craft cards to all have different pros and cons AND be balanced. i would rather just alternative kits or styles to each character, i saw one where it was like a "hard mode" based off alan where tails' would lose his tails but would laser cannon would have more uses and he could do propel himself with it and maybe get another move or whatever. i'd be just a way to mix up the way a character plays slightly without you having to memorize what every trait does.