When I image with narrow fields (12 x 15 arc minutes) in fairly star poor regions, I get a lot of plate solve failures with Pinpoint. I traced it to the following and hope you can add a proposed fix.
All the plate solvers I’ve used (Pinpoint and Plate Solve 2) return J2000 coordinates and want a hint in those if the field is narrow. A while back, I asked the questions about Epochs and was told to use J2000 for SGPro pointing. No problems and I set my Gemini to expect J2000. However, even though Gemini is happy to receive and precess J2000 for pointing, it will always return JNow (this is the case for Gemini 1, Rene said he may add an option to return J2000 if needed for Gemini 2). I think SGPro uses this to feed the plate solvers, causing failures (thankfully there is the Astrometry.net fallback although it takes time).
Would it be possible to have an option under the plate solvers or mount to precess what is returned from the mount to J2000 to feed the plate solvers when needed. I think this will reduce the failure rate.
I’ve tested this on images that failed to solve with Pinpoint…when I fed the standalone the JNow as a center point, It usually failed unless I selected a spiral search with 50% expansion. When I fed it the J2000, it solved without problems. The precession routine would not have to be very precise.