All depends on what each player prefers spending their credits on. I like to expand, especially with Juves/Braves, some despise the runts though. Some prefer to focus on equipment and go crazy on backup weapons and trading post rare trades. Some can't seem to find it in themselves to part with hirelings.
For gangs that struggle a bit more, the beauty of Necromunda is that they often will be able to pick the scenario. That's exactly when you don't want to do Gang Fights. Pick your scenarios to even the odds, and maybe get some credits on the way.