O M G Dude. You really outdone yourself! I haven't looked through many ideas... so my opinion might not be as heavy lifting as someone else's but it's so far the msot detailed The content is amazing, the textures are really awesome, and you should be really proud of yourself.
Personally, I think that: The Cyber and The Confection should change Hallow from time to time, also finishing The Contagion... which I think still lacks some little work should change The Crimson and The Corruption, to give players more content and the feeling of different choices. Now, I'm not sure if The Confection is supposed to stand as The Hallow, but it for sure would be 100% awesome.
And still... I would like to note one thing... I'm not sure if *Propeller wings* is the right name for it... The name doesn't fit... Don't You think so?