Gonna bump it a single time, get some more possible support.

It's between 2 existing vaults, or a whole new one. I feel like Vault 3 and Vault 22 were quite cool, as one (vault 22) of the two was a heavily plant influenced vault, who, due to this, were overrun by the things, turning the vault into a jungle sort of deathtrap.

I also like Vault 3, as they were some of the people to begin trying to advance into the wastelands, (but were consequently killed by f(r)iends) and expand beyond their home.

However, perhaps a non cannon custom vault would be far better, as there are TONS of things that can be played around with in the vault idea. 

ALONGSIDE THIS, I'm currently thinking up a sort of map for the vault, using Fallout Shelter as a way to make my ideas sort of come to life, looking over different layouts etc.

Really, ANY ideas would be fantastic from you guys. Once I feel everything is in order, I'll start up the OOC!