I believe koishi and junko would put way too much pressure on the player. Combined with remi flan or reison they would be exceptionally deadly. Fumo war should totally make it so that each fumo can fight eachother. (They just might occasionally slap eachother.)
For game balancing reasons, Junko could use some sort of sound cue whenever she teleports. Not to mention that sudden loud noises can help to startle people. Just a suggestion.
Putting out my thoughts, Koishi would look cooler if she didn't just... appear like the closer she gets, the less opaque she becomes. so there's this kinda fading in for her
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