Maybe the Nexus could be approached to host files, as well as Steam workshop. I know a lot of people aren't into Steam, so a OriginSin2Nexus could be the solution.

Well, I do know they had a Nexus for OS1, so I don't see why they wouldn't have one for OS2.

Good to see people suggesting the import/export of assets.

Maybe the ability for us to edit stuff straight down to the in-game sound and texture files. I know modders from Skyrim have done texture overhauls as well as fully voiced custom NPCs, and what with users asking for full voice acting (ha), an eager modder could of course create that, themselves.