should there have been another season before crystallized

undoing nya's sacrifice so soon wasn't the best, even tho the characters had mourned her absence for a year at that point, the viewers needed to really feel what it was like without her. there should've been a bridging season, not focusing on any one character but filling the gaps needed to make a finale with all the ninja present more impactful. i don't know, it could've been about some villains helping the overlord regain strength after being defeated by zane in season 3, not like a full...