I was thinking of how to make D&D encourage more emotional growth and vulnerability. Initial thoughts:
You have a handful of aspects (ala Fate) and earn Inspiration when they cause you trouble.
Inspiration cap of 2 instead of 1.
Once per session, if someone emotionally comforts someone else and they open up, the party gets a chunk of XP and either of those PCs can spend inspiration to instantly give the party the benefits of a short rest.
I'm thinking also of a way for everyone to chip in an inspiration to give the team the benefit of a long rest but I'm not sure what the right trigger is
maybe resolving a more longstanding emotional subplot? like a really significant positive shift in any relationship is the trigger for potentially doing the friendship is magic thing