Abdeslam Ouaddou's men finished the season with the best attacking record in the league.
Zwane noted that the scoring responsibilities have been too spread out across the pitch rather than being spearheaded by a dedicated talisman who strikes fear into African opposition.
He elaborated on this requirement, stating: "We've seen Pirates scoring a lot of goals, but most of the goal contributors were not out-and-out strikers; it was defenders and midfielders and sometimes strikers.
"So, for Pirates to conquer Africa, they would need to have at least one regular goal-scorer; a goal-scorer that would give the team in excess of 15 to 20 goals a season."