As an extra option for Senran Kagura Playstation series, I would like to see some kind of mission builder option. Limited or extensive.
Outline of how it would go.
Pick a stage from a list of unlocked ones you've already played.
Set the choice of items which will be generated in random spots. There is a limit on the number of items.
Pick the types of enemy minions that will appear. It may be limited based on the stage.
Pick the ninja girl bosses that will appear with a maximum limit that may be determined by the stage. This will allow the use to fight against DLC characters which aren't used as enemies in the missions.
A system that can determine the maximum number of overall enemies that can be used in the mission. Each stage could have a maximum limit which can vary. Certain enemies like the elite ones may cost more. Ninja Girl Bosses may have a cost.
Deployment option determines how enemies appear in an order. Each stage will just have a programmed list of deployment options to choose one. Examples: Beat all the minions then fight ninja bosses. Fight each ninja boss one on one with a small group of minions supporting them.
Set difficulty setting for that mission.
Then it can be saved where you can play it and share it.