Feel like Aya is a weird inclusion with the others in that group. Yukari isn't really around it that often in canon, but she can appear at any time and does so a lot in fanon. Fanon Aya, on the other hand, generally seems to only show up to deliver the paper unless it's a Reimu x Aya work

" Eyesore of a shrine " To be fair I prefer the Moriya Shrine

Maybe Aya can be replaced with Clownpiece, you know, cuz she lives under the shrine