Going along with Umier's ability, the ability to bound should be extended to bind people to the rules. As Reimu can ascend from reality, Umier can force the supernatural to stop "cheating."
I guess Iguuy would have a similar power?
Irakuy can manipulate extremes. Whereas Yukari can change the area in which one opposite changes into the other, Irakuy can determine just how far something can go on the scale. For example, she can limit the scale of "powerful" so that the most powerful person can only be as strong as a fairy.
Ailimer can manipulate free will. Wow, that is pretty much as broken as fate.
Hey, this is sort of fun!
Eesrap can create feelings of goodwill and generosity.
Imimotasoyot no Okim can speak in ten different voices at the same time. :U Master voice actress right there.
Nirzan can find stuff nobody wants.
Asagok has the power to invoke routine. She is a midboss in most Evil Touhou games.
Naznu can controls humans, especially Nirihci.
Asarum is a super carpenter who excels in building and repairing ships.
Nesier can manipulate particles!