For 2017, it looks like we have three obvious retirement candidates (Harvey, Irma, and Maria), and one possible retirement candidate (Nate). Could 2017 be tied for #2 with 1955, 1995, and 2004 with four names retired? Nate is probably the wildcard for retirement, due to the death toll in Central America, causing a similar death toll to Otto last year in the same area which was retired. The damage in the U.S. for Nate, while not as bad as the other three, was still pretty significant at $2.5 billion, and less damaging storms have had their names retired in the past.
And yes, I know I posted this thread at A.net as well.