So, any speculation on who else might be appearing in AoCF (aside from the ULiL cast, Doremy Sweet and the 2 newhus)?
In my own guess, I decided to narrow down the candidates by factoring in these points (characters that don't meet either one of these criteria are eliminated):
1. Not playable in any previous fighters except ULiL. This eliminates Cirno, Meiling, Patchouli, Sakuya, Remilia, Alice, Youmu, Yuyuko, Yukari, Suika, Iku, Tenshi, Momiji, Aya,, Sanae, Kanako, Suwako and Utsuho.
2. Character has something to do with dreams, possession and/or being ghostly. I don't consider flowers because the "flower" in "Antinomy of Common Flowers" might be metaphorical. This eliminates Rumia, Flandre, Letty, Chen, Ran, Wriggle, Mystia, Keine, Kaguya, Shizuha, Minoriko, Hina, Yamame, Kisume, Parsee, Yuugi, Satori, Kogasa, Nazrin, Shou, Kyouko, Yoshika, Seiga, Wakasagihime, Kagerou, Benben, Yatsuhashi, Seija, Seiran, Ringo, Clownpiece, Sunny, Luna, Star, Akyuu, Tokiko and Rinnosuke.
3. Character is the kind that might be interested in the events of AoCF. This eliminates the Prismrivers, Sagume, Junko, Hecatia, Rei'Sen, Yorihime and Toyohime, but it also puts Kaguya back on the list of possible characters.
4. Character's being present in AoCF should be logical. This eliminates Renko and Maribel.
PC-98 2hus are NOT eliminated, but since ZUN is pretty much ignoring PC-98 by this point, I'll have to assume that they are...
And so, the only characters not eliminated by this point are (in order of debut appearance): Ran, Eirin, Kaguya, Rin, Tojiko and Kosuzu. That's not a lot of candidates, is it?