I was thinking that Japan might be interested in a few of them to operate of the Hyuga and the Ise.
Those ships were obviously designed with the F-35 STOVL variants in mind. A few years of Harrier practice might be just the ticket. Work out bugs and develop a doctrine for Flight Ops, Japanese style.
Southeast Asia would collectively freak if Japan were to buy them, even though the very construction of those two ship and the planned 22DDH vessels strongly indicates the JMSDF is going to move into carrier aviation again soon.
Now you’re thinking. With real estate at a premium in Japan (or so I’ve heard) the Harrier’s capabilities would be a plus for home defense as well.