So I been looking at all the stuff in GECK and was thinking a question, Why is some stuff from Fallout 3 left out? And why is some stuff from the DLCs there but some are not? And some stuff that's there doesn't work the way it did in the DLC?

So here's the big question. Is the reason some stuff was left out and not working for future DLCs?

Where have the homemade weapons gone? The railway rifle, nuka grenade etc.

They got lots of stuff from Fallout 3, but maybe they couldn't find a good use for it all. From what I've heard a lot of the Mothership Zeta stuff is in there too, but building a spaceship somewhere just because you have the resources wouldn't make much sense.

Why they haven't been given all FO3 resources I don't know.

It was probably easier for Obsidian to use the entire BSA to get a few items they wanted for the game, however some BSAs probaby have nothing they needed. So, they were left out. So, we have a bunch of things in the editor that are not in the game, and not all BSA's present.

How these things are parsed out behind the scenes is not known.

I like CCNA's response better than mine.

The good news about CCNA's reply is that it makes it alot easier to import stuff you liked from FO3 to FONV since it's already in the .BSA