[quote=@Lonewolf685]
Can we app the metaphysical representation of celestial bodies for purposes besides being masters?
[/quote]

You can only app ORT and you're only allowed to play her sleeping in South America.

[quote=@KoL]
Can we app a genetically altered human with a kilometers long sword that can cleave said representations in one hit as a substitute Servant? 
[/quote]

There's no Grain so the sword wouldn't work.