Well, as far as I know, and I could be wrong, but I was under the impression that Takahashi has not officially ended Mermaid Saga, and that she could continue the series with another chapter in the future. After all, she finished One Pound Gospel over a period of 20 years or so. So I never considered Mermaid Saga to be definitively over. I would be happy to see her write more, but at the same time, I do not mind so much if she doesn't. She is currently writing a new series called Rin-ne that can be read on therumicworld.com. Thanks for your comment.