Stronger Dutch nation state asserts more influence and interest in the region, adding additional SEA territory to the nation such as Eastern New Guinea and Malaysia, much better management of the colony in the education of the population, less exploitation and more self autonomy.
This will leave Indonesia with more territory and better infrastructure right off the bat post independence, likely better diplomatic reputation and closer ties to Europe. Allow Indonesia to follow an economic miracle similar to South Korea or China and you have a very plausible, modern great power on your hands.