If I had a significant amount of points I'm looking to pass on, I'd be a bit nervous. Especially in this new age of "never expiring" points, there is going have to be some periodic purges or re-authentication we/they haven't even dreamed up yet. They can't just live on "forever" on WN's books and computers. What would stop them from closing inactive accounts periodically then reinstating any who complained after showing some sort of current proof of ownership?
At a minimum, I'd burden the estate to earn or spend some points at least once per year. I don't suppose there is anyway to facilitate a transfer with WN gift cards or WGA+ fares at reasonable rates?