IMO, Kim has had a taste of the good life, however he will definitely have a problem with China if he tries to ‘Westernize’ North Korea.
Why?
You understand China's ‘grip’ on N.Korea was broken because Trump offered to help.....now China has to rethink how to retain some degree of control and influence. TrumPs made it clear China, S Korea and Japan will be who these economic things ‘turn on’ and their mutual cooperation, but the US will do the denuclearizing.