That would work very well, even could with four players (with dynamically scaling difficulty). It would turn it into a FPS wastelands 2!.Yeah, adding Co op to the Fallout series makes more sense with how the games are played and how the stories go.
There may not be a licence fee to pay to the platform holder, but since this is a Steam release then 30% of the sale price goes to Valve. Which is probably slightly more than developers pay in licence fees to console platform holders.
The radiant quest system from Skyrim
Lol, that was hardly an amazing addition, while the idea was solid, the implementation was stale, perhaps they've fixed it, but knowing Bethesda they will have just created a new-fangled idea that will never come to full fruition.
Was not aware GAME, Amazon etc. work for free.