Uhmm, yea, and then.....? I feel something is sorta missing here
There are plenty of cool little places in the Glowing Sea though, but a vault door have to belong somewhere, and vault doors aren't exactly lightweight, so not easily pushed around, not even from a nearby nuclear blast So you want a vault in the Glowing Sea?
I think it'd be cooler to have a whole new Vault out there somewhere involved in a DLC somehow. The area around Virgil's cave would be a good location for it. There could even still be people living in it. Maybe the Vault stayed intact, but the door was covered over by debris from the bombs explosion, so it could never be opened. Then a landslide shifts the debris and reveals the door.
I kinda miss all the creepy feelings we used to have in various vaults in FO3 & FNV.
All the vaults in FO4 are too populated, bright or happy.
Putting a Vault in glowing sea with heavy number of ghouls in dark surrounding could be awesome.
...and Yes. We can throw the door outside to be found by you.
Something like Vault 11 or 34 would be cool