I cannot say for sure whether the original scenes would have contributed to the episode or take away from the animosity of what the old lady does to the snails. As the episode stands, I like how it does not outright say that the old lady intends to murder snails, but leaves it more open-ended as to what happens to them. I would be open to seeing how the original scenes/plot would be executed, but my gut is saying that if the original plot used for HYSTS, the episode would only be remembered as one of "where an old lady tries to eat Gary" I can do without the mean spirited route and less Gary Abuse.