Midnight can give Kobra Kid a motorcycle ride and show how to drive it and they develop a relationship.
The others can develop relationships.
They can go on another mission maybe to get Missile Kid with Party Bandit and she can get attached to the guys so Party Bandit leaves her there to find her family who are dead buyt she wont know they are dead. Missile kid could've been kidnapped and Party Bandit was trying to get her back the whole time she was out in the zones.