Hi Anthony,
I am working on a project using RTK/PPK GNSS solution of UAV camera shots for georeferencing the 3D model of a large landscape using ONLY the precise flightlog data. My Camera positions are accurate 15-30 cm. I have GCPs to countercheck the accuracy, at the moment I am at 40-50cm precision, but hoping to improve this result. High precision camera positions are much better for georeferencing via flightlog than normal GPS, but so far RC has not proven to me that camera and lens parameter calibration can make sure to get the full potential out of this. At the moment flightlogs dont seem to replace GCPs!
However I am working on it and hopefully we can improve accuracy together with RC.
All the Best
All the Best