Just another random thought for potential content / rewards..
Inspired by ItMe mentioning remix of songs. There are a number of 'romance' or 'romance-like' songs through the FF series. Remixing, or just straight up adding, those songs could be pretty neat for some players.
I can mentally recall a few tracks from FFVI, FFVII, FFIX, FFX, and FFXV that I would ascribe that romance and or relationship level music to (some bitter sweet, but I think that's fine, and you might gain opportunity to tell the event quest story with inspiration from that game / music itself).
