Dredging up the thread because I'm surprised at my reaction to the presentation. I am genuinely...
disappointed. Not in the "Oh it's not here for me" sense the way I was with Ryu, Terry, Joker, and Steve, not in the "man I wish it was X" sense like nearly all the other Ultimate DLC, I am disapointed in the moveset itself. Now, I know pretty much nothing about FF7 specifically, but I've seen Sephiroth's fights in Kingdom Hearts and am familiar with at least a few other JRPG main villains. I was not expecting "sword big" to be 80% of the moveset for a guy whose (as far as I gathered) big deal in-story is a feat of spellcasting. I'm almost glad that Isaac isn't in yet, because one of the last things Golden Sun needs is to be known for a generic anime swordsman. I'm not usually a fan of that argument (see: Isaac supporter), but it's going to be hard to avoid when Sephi honestly looks more Marth-like than three Fire Emblem protagonists.
Edit: oh right, forgot the mii costumes. Not a fan of the overemphasis on one game in a big series, and I remeber thinking "wait, that's it? This seems too lacking"
Edit 2: Yes, a boss rush would be great, but only if we can use what characters we want for it.