DalekSec: I don't think that this is to happen for now.
The guys of bethesda appear to be too lazy to remove the dead GfWL for the game, so even in Steam you need a crack to play it.
Doesn't the Fallout Mod Manager or FOSE (not entirely sure which one) do that already?
The only thing that poses an issue is the horrible Fallout Launcher.exe, because I remember that it had a huge number of problems, like resetting wide-screen resolutions to 4:3, not letting you start the game etc.
I've just realized that Fallout 3 has more than 11,000 votes on the wishlist. o_O
I thought that it only had about 5,000 in total...
So, it'll likely happen but I fear that we will have to wait some more and that it will be the worst case of regional censorship on GOG... :(