A quick sermon for the choir:
3★++ w/Synergy > 5★ with no Synergy!

No Synergy: couldn't even master the level 60 dungeon in the FFVI event with a full party. (I have no good RES armor so that didn't help either)

Character Synergy + Equipment Synergy: Gilgamesh one-man show all the way to the level 75 dungeon in FFV event.


The mistake I made on my first playthrough was getting rid of my 3★ equipment. It's better to just upgrade it to max when you have spare materials, and combine it with a duplicate. I think when a character has Synergy they gain 10 levels and equipment synergy is 1.5x to all of its stats. Definitely worth exploiting when you can!