Ha ha ha, funny idea Exxon,
You can have like modern day type kits, for example instead of the Berserker kit you can have Alcoholic or Man from a nut house.
Alcoholic
Allignment: Only chaotic nuteral
Rolls a d6 insted of a normal fighters d10 for HP
Maximum 20 Constitution
Intelegence maximum of 10
Only proficiant with knives and bottles
Disadvantages:
Every day you must save vs spell or loose 2 strengh and charisma, due to no drink, to negate these effects you must go to the nearest pub/bar and get intoxicated