I am betting that Phantom, The Lion King, Wicked, BOM, and Hamilton will all be with us in a decade. And maybe Alladin, based on the current grosses as it closes in on two years (but too early to tell in the final analysis).
Even Chicago, which I always assume will not be around much longer because of the modest grosses, could be around a lot longer. If you look at its annual grosses over time, it is not much different from where it was years ago. I don't know how much the running costs increase year to year, but it has been at a steady level for years now...just closer to the margins (I seem to reall reading that it needed $450K a week or $23M per annum. It has been grossing a lot more than that every year. It may become the NYC equivalent to The Mousetrap.
I assume Jersey Boys will close soon if for no other reason to free up a theatre, given the long runs. (I assume AAIP, Fun Home, Something Rotten, Finding Neverland, Matilda and Kinky Boots will all still be running this time next year).