Reimu is not FP5 because she wouldn't fit for the Game Award.
And after that, she'll be treated as deconfirmed entirely because she wasn't FP5.
I Did make a Post on Smashfaqs about this
but Pretty Much, It's safe to assume that they don't chose characters based on the best time to reveal them, but because of their own character merits and uniqueness to Smash.
and you could argue that they could chose the Release Schedule based on the DLC Fighters. my thing is, If she shouldn't be revealed now, when should she have been revealed
Besides the September Direct, All the Avenues we got our DLC revealed at has been at Western Focused events. Keep in mind that really only 2 of our DLC fighters have Notable Western Presence (Joker and Banjo).
In the case that Reimu was one of our Fighters, that would mean Banjo would have to be Saved for This year's TGA...but that would mean E3, a Western Focused event, would have 2 Characters that really don't appeal the best to that crowd. in this case there really isn't Winning
Plus at the end of the day, it's a Smash Reveal, it's gonna get Hype one way or another.