Has anybody considered what music tracks we'd likely be getting from Touhou in the event that Reimu made it in? It'd probably be a similar case as Castlevania where the music team really likes the soundtrack and makes an incredibly large selection of remixes. So, narrowing it down to one song per game, my prediction would probably be something like this:
HRtP: Eternal Shrine Maiden
SoEW: Complete Darkness (inb4 Mima gets a trophy, which is more than ZUN's given her in years)
PoDD: Mystic Oriental Love Consultation
LLS: Bad Apple!! (though I'd personally want Alice Maestra)
MS: The Grimoire of Alice
EoSD: U.N. Owen Was Her (though I'd personally want Septette for the Dead Princess)
PCB: Necrofantasia
IaMP: Onigashima in the Fairyland ~ Missing Power
IN: Maiden's Cappricio ~ Dream Battle (kinda hard to have Reimu without her most famous theme. It'd likely be Lunatic Princess otherwise)
PoFV: Touhou Judgement in the Sixtieth Year ~ Fate of Sixty Years
StB: Tengu is Watching ~ Black Eyes (alternatively, it could be Wind God Girl, despite that originating in PoFV)
MoF: The Gensokyo the Gods Loved (really tough choice, since MoF is full of great songs, but this song consistently scores top ten in popularity polls, likely garnering a lot of attention. Personally, I'd want The Primal Scene of Japan the Girl Watched)
SWR: Catastrophe in Bhava-Agra ~ Wonderful Heaven (also, like the street fighter stage, it'd be really cool if it changed to Bhava-Agra as Seen Through a Child's Mind when on the last stock)
SA: Last Remote (another really tough choice like with MoF, and I'd have personally picked Nuclear Fusion if it were up to me. But it's all cool, since Last Remote is still a good song. Then again, it's possible that they could choose Hartmann's Youkai Girl, due to Koishi literally being the most popular character in the series after Reimu and Marisa)
UFO: Emotional Skyscraper ~ Cosmic Mind (probably the easiest choice on this list so far, despite UFO having a really good soundtrack overall. Odd)
Soku: Unknown X ~ Unfound Adventure (come on, what else could it be?)
DS: Bell of Avici ~ Infinite Nightmare (like with StB, you could also probably substitute The Youkai Mountain ~ Mysterious Mountain)
GFW: Magus Night (nah, forget UFO. This was the true easiest choice. And this is coming from someone who likes ALL the songs from GFW)
TD: Shoutoku Legend ~ True Administrator (strangely, I think that they'd go with this one instead of the more popular Desire Drive, though I'd personally prefer Old Yuanxian over both of them. kek)
HM: The Lost Emotion (no contest whatsoever)
DDC: Kobito of the Shining Needle ~ Little Princess (man, ZUN really knows how to make a good Final Boss track. Every single one of them is good. However, this one probably takes the cake for being the best of the best)
ISC: Cheat Against the Impossible Danmaku (though, like with StB and DS, you could probably make an argument for Reverse Ideology)
ULiL: Last Occultism ~ Esotericist of the Present World
LoLK: Pure Furies ~ Whereabouts of the Heart
AoCF: Tonight Stars an Easygoing Egoist (Live ver.) ~ Egoistic Flowers
HSiFS: The Concealed Four Seasons
VD: Lunatic Dreamer (I do think Nightmare Dairy is a better song, but Nightmare week was just... yeah. Meanwhile, Wrong week was a straight punch in the guts, making you think "WTF is happening?", so Lunatic Dreamer was a little more memorable IMO)
Bonus Track: Theme of Eastern Story (sorry, but it ain't Touhou without this song)