I really need to decide on which FES character to pity/save for, considering the cost needed.
Orochi is a great character, but his leader skill only applies to Orochi characters so I won't be able to use my favorites with him, like Halloween Kula, Mai, etc.
Mukai looks to be a God and near broken especially for O.Iori teams, but his leader skill only benefits blue elements. Definitely more of a sub than a leader.
(Pretty) Chang is another solid character and her leader skill benefits female fighters and not a specific type, so I can use a wide-rage of elements/types with her without worry. That being said you can't really use males with her either, at least as a leader, so...
I don't particularly care for PVP (except what's needed for the dailies) and I play for fun, so I'm kind of leaning towards (Pretty) Chang right now. I want to be able to use the "waifu" characters I pull, and she seems to be the easiest way for me to do that.