As Boromir states in the Cartoon LOTR, "And there sits our quest." You brought up a very valid point esparado87, this is the ring hero MM gets? If Smaug dies, Gollum can pick up the ring but just sits there and can't go anywhere, doesn't seem fun to me.
However, I love Aule's idea, shame, what is the communities decision on this? Yes we can't avoid every problem, but Aule's idea is a good one, though esparado87 is correct and to just have the ring stationary for the rest of the game is unfair, I don't know.
What are we to do? I mean when Galadriel gets the ring, doesn't the ring disappear? Or if Frodo dies does he drop it? Smaug's loss of the ring could be acceptable like that I guess.