Yes.
The only thing I'd accept from another game is if it actually adds more features to the game. Such as the portal gun.
Hmm, well, now that a picture of the actual Fallout 3 Autoaxe has been posted, i do realize it could use some work on the model, it's not as detailed as the one in Fallout 3 :(
As for the features, what more is there to do? I guess there's some things that haven't been done, but i'm not sure :S