Also, how good is Haru as a party member? Who are people's bread and butter?
No idea about Haru yet. I didn't even use her in the dungeon after I got her. My party seems stuck at Ryuji, Ann, and Mokoto. Before Mokoto I used Morgana a lot, but after getting Mokoto I found I didn't really need the multi-heal as much. I could always change MC to something for that. I preferred Mokoto's speed and power over Morgana. She's also got a multi-heal now, so we're pretty good.