I think there is a lot of misunderstanding of what Kim wants. He wants to be seen as important, as a big player on the world stage. That's all. Everything is geared toward creating that appearance. The question is do we deny him this or give it to him. And if we give it to him what can we extract in return. Its not that complicated.
I would submit, especially given the treatment North Korea receives in the international news media, that he has long since been elevated to ‘playmaker’ status. Most evidently in East Asian affairs, but I’d be comfortable making a global case too. This evidenced in the Malaysian diplomatic crisis following the murder of Kim Jong-nam, but also during the period of time he was sending missiles across Hokkaido with regularity.
If the fixation is on the prospect of a photo op potentially creating that appearance, look no further than his recent trip to China and meetings with Xi.