Vito was originally able to join the Fight club to earn money and gain reputation to the Reputation system.
Remains of this feature can be found in:
20_51_01_0058:There is a fistfight for honor and money. Gain both of them. 20_51_01_0059:Beat him. Smash him. Annihiliate him. Just don't let him do that to you, and stay in the circle.
This option was part of the Job System where Vito was able to make many side missions to earn money or reputation.