haha! I Love this idea! I like building things in MMO's. Have you ever play Vangaurd? I had a house and a Galleon. That what I Played for, To build my things up and Contribute to the guild.
One thing tho, Dont just give us rusted old waved lenths of tin to build with, Let us get like BoS tech and build modern Vault City style establishments, Or even better, Have it start off as a shanty town and then upgrade to a more modern feel.. EVEN BUNKERS would be MADNESS!
Teir 1 Base Camp
Teir 2 Base
Teir 3 Fort
Tier 4 Fortress/City
Sort of Like Age of Conan, But more badass!
Also let us make revenue from them, so like put tax on items in town, Reference Lineage 2. (perhaps not with the whole, 'Barter' system in place?)
Starwars Galaxies was epic also, as is Vangaurd for building house's ect. I'd take a long look @ what work and what didn't!
In fallout Tactics there were tanks and Hummers, Let us drive some brahmin with handle bars tied to their horns! Something for assisting us in our travels