sidedcore

Dont quote me on this but, I think there is some creative commons license that mods can fall under but generally the issue is with ripping something from one game/product and putting it into another game/product. The Bioshock PA looks like a big daddy but its not an exact model copy and pasted from Bioshock into fallout, the modder spent a lot of time and effort remaking it for the Fallout universe.

I think there is a way to do this with Bodyslider Outfit Studio from CBBE mod, but it can produce weird results with textures. Create wearable > Export as OBJ file Import existing item to bodyslider - if you made a hat, import an existing hat into bodyslider. Import custom Item.OBJ > Copy bone weights from existing Item to Custom Item Export custom OBJ as .nif Then do the usual creation kit add new item and check the item works in game.

Currently at work so the best advice I can give you is to look at one of the other companions and figure out what yours is missing. Off the top of my head - you need to add the companion to multiple "Companion" based factions, and attach a few scripts to it, then give it a quest when you can recruit/dismiss/talk to it. Check out a youtuber called Seddon4494 he has a lot of recent videos around companions and quests.

I'm new to modding so I could be talking rubbish, but it sounds simple... Create a companion/settler that is always in PA, maybe give the player an item that activates/calls the PA to the players position or even set the companion high above the player and let them fall in when called? Most of the other stuff will be handled by the default AI, so its basically waiting for the GECK/creation kit to be released which will make modding easier.