Since i see silent pictures are working fine on my 50D as well even in 5x and 10x zoom and since other models have "high res" working, as far as i know, can we have a set of "several" shots taken in a row in different files, following the af-frame, so the only thing we would do is stitch them together in post?
I saw you enabled a buffer for silent pics, maybe that is helping? I don't see the issue if i take several shots and stitch them so i guess an automated function would be nice to have for those that can't use high res.
Scan of the frame with AFFRAME is already there, it just needs to leave a bit of overlapping between the movements and we're done.
I thought of doing it myself, i can sort of understand the code but it would take me at least a week to do, with my current knowledge and speed :D