The BIS has published a report on stablecoins. On Alphaville Izabella Kaminska approves but argues that the report does not contain novel points. One aspect discussed in the report concerns the benefit of stablecoins for cross-border payments; it may be limited unless technology is able to address the key friction:
A major obstacle to the interlinking of domestic payment systems and/or the development of shared global payment platforms is differing legal frameworks across jurisdictions and the associated uncertainty about the enforceability of contractual obligations resulting from participation in interlinked or shared payment platforms operating across borders.
See the VoxEU series on the topic.