Our DICOM viewer was phase one of a PACS project that was, when I helped integrate the viewer, fairly mature. Maybe you could offer some guidance/advice there. Picture Archiving and Communication System (PACS) and there are several other thread discussing the same. I’m unsure why it has stalled.
Also sounds to me that you face the same issues that many other providers face in remote locations, stable enterprise/repository data access. This is where offline/online sync becomes important with the core OpenEMR infrastructure for that support being looked at currently.
While it is difficult for the open source version of OpenEMR to create and maintain value added applications, we do strive to provide tools to support those endeavors and in the case of clients, native or browser, a robust set of APIs are important. So any contribution in that regard is a win win for everybody.
Lastly yes! I am shameless in plugging OpenEMR.