Well, it's not really just about Swift. There are probably many other people that are going through this. Not every person who generates nudes of someone else is going to make it to the news, after all.
I could see this being a problem in highschools as really mean pranks. That is not good. There are a million other ways I could see fake nudes being used against someone.
If someone spread pictures of me naked: 1. I would be flattered and 2. Really ask why someone wants to see me naked in the first place.
If anything, just an extension of any slander(?) laws would work. It's going to be extremely hard to enforce any law though, so there is that.
However, how long have revenge porn laws been a thing? Were they ever really a thing?