Yeah, you are right that Rumpel is already ruined. We’ve seen his story so far and we know that loads of bad things happened to him. The question is how many more can happen to one person. It’s getting old, I think, and unrealistic. How miserable can he get eventually.
Besides, I think that if any of the villains is about to be redeemed, it’s Rumpel. If none of the villains is about to be redeemed then what’s the point of the whole story. It’s supposed to be a fairy tale, right.
You’ve got a point with Belle. Her storyline is tricky and, as I said, would require some effort on the part of the writers to fit her. That’s why I’m inclined to believe they will take the easier road and kill her off.
As for American televison comment, it’s just an observation I made watching quite a few shows.