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Generally, I'm against wings, but since using books without GM restrictions is allowed, I think wings should also be allowed without building a GM structure.
Regarding Necropolis, I think the enhancer should be removed, and upgrading vampires shouldn't be prohibited; otherwise, only skeletons will remain for Necropolis. And if a hero is chosen randomly, it's not worth playing as Necropolis at all – that is, I'm against random hero selection.
I'll refrain from commenting on prohibited heroes.
And the refugee camp – I'm hearing about it being prohibited for the first time.