I've been wanting to grind stages recently for cards but always find myself stopped 60 or so attempts in, as I don't want want my friends' opinions of me to go down seeing as I always turn the option to stop whenever one of them get exhausted on.
This usually leads to me waiting until the next day, for their morale to be restored, which is inefficient for limited time stages.
I'm also aware that their morale can be go back up faster if placed in the school, but I don't want to waste space I could be using to level up units on units that are already at the highest level.
That's why I want the option to have a consumable item of some kind that allows your team to instantly have their morale restored, rather than having to take several hour long breaks between each session.