even already in the 20s there was discussing going about the future of the east-indies in the Netherlands. back then it was thought that by the50-60s they would become independent.
in such a scenario i think that borneo, celebes, the moluccas and new-guinea stay under dutch control, some of them even ending up like dutch provinces.
probably independent java, and a 2 part sumatra (Aceh and the southern part).
borneo likely will get some sort of dominion like status later, if celebes & moluccas will go independent will depend on political developments, especially how active the javanese will be (same applies to borneo).
new-guinea might end up as a province or independent part of the kingdom (like curaçao right now)