A special evaluation study of ADB on support for promoting good governance in the Pacific, available at https://www.adb.org/documents/asian-development-banks-support-promoting-good-governance-pacific-developing-member, may be of interest: the study notes that while governments have made clear commitments to improving governance, issues of capacity, implementation, and enforcement remain key concerns for achieving this crucial development goal; it recommended a shift in emphasis from broad-scope policy lending to longer term sector development programs supporting priority sectors to secure lasting governance outcomes; and exploring nontraditional approaches to sustain improvements in governance.

There are certainly various obstacles and also other factors which might help to increase or even strengthen good governance, if we consider traditional and cultural systems and an specific case. However, good governance must be previously defined for the specific case we are analysing, in order to find out which are the relevant and appropriate standards to use for the purpose of our research.

An interesting paper and hopefully useful can be found here:

Article The Impact of Culture-Related Factors on Good Governance in ...

To contribute meaningfully to this inquiry, one has to be familiar with the traditional and social systems in the Pacific. Further, the key terms, good governance, have to be defined. Specifically, what constitutes 'good governance' (reason why nations draft their own constitutions - to reflect the uniqueness of their aspirations)? It may help to examine how Sweden has conflated the cultural/Social and the contemporary systems without exposing the former to the risk of obsolescence.