Fair enough, this series & it's spoilers though, I swear, I guess ponies are just bad at keeping secrets!
And personally, I've always felt the actions after the redemption/reformation are more important then the actual or implied action anyway. I agree Sunset will be most likely be more interesting here then in the first film. I'm just kind of sad they feel EQG has to have a Twilight, why can't Sunset just be the Human worlds Twy!? I mean let's face it even if this is pony Twys last visit to the human world, they'll shove the actual human world Twy in eventually somehow *Equestria Academy perhaps*, and like human Flash she'll just be extra baggage.
And sadly I doubt the human versions of the mane six will ever be as interesting as their pony counterparts. Really the EQG original chars like Sunny & The Dazzlings are much more interesting characters, a shame they'll probably just end up supporting cast if/when EQA comes out.
That said though , I do hope we learn more about the human versions of the chars in this film, and EQA.
EDIT: Another thing that bothers me, the song in this clip has a Sonic Underground vibe to me for some reason, it's not horrid. But compared to the other songs specially the villian songs it just feels genaric & kind of lazy.