Double Musou Supers, and other features to make players abilities and supers appear different, abilities don't stack or look any differet, this is where the Double Musou Supers idea came from, i think if two arc stridders near each change up the atmosphere when using their super, maybe some special effects could be added, that allow them to work like the ratking and other team equipment for each special shard abilities and skills in the game as the players are paired up and use many simular skills, the enemies in the game also have simular problems, they die easily and odnt have many ways to stand out, or at least look different, so special events appear boring and quick to distinguish, to further more problems: predictable and unrewarding , hurts replayability to fight the same monsters in each planet, i think if they added some new monsters or team play features to compensate, or at least made some more changes to the enemies weapons and alchemies, like sengoku basara has many team attacks for enemies. the enemies could perform special attacks, or conjure and summon/call other features or magic in some RPG games this could improve the rewards, to make the game more fun and rewarding.