It leaves little to expand on about your character later on.
Genin have to handle their insecurities with their teammates, dislike, comes from not knowing about their history.
As apart of character development we choose points in the RP, down the road as to clarify, and better work with out teammates.
A lot of the time, teams are dysfunctional because they look out for themselves first, without realization of teamwork. This is due to the shocking event, they might go back to the academy.