I really would prefer a DNG only option...
Shall I suggest you do like I did : Send this request to the Parrot Support and when they see we are a bunch of users that require this ‘simple to implement’ option, they may change their mind for a future update.
Your idea to press and maintain a DNG+JPEG option to see a DNG Only option is cool, but there would be users that would press a long time on the option and that would not know how to revert back to the original.
I was suggesting them to make it a ‘Yes/No’ option in the camera settings ‘Will you want DNG only (without JPEG files) when shooting raw files ? (Beware, your shots will need specific softwares to be seen or edited).
I’ve just been flying and shooting Bracketing DNG+JPEG files with the new FF6 edition, and it seems to me the time of ‘Black And White tempo screen’ does not wait until the processing is finished. So you get the live view to go on flying even if Raw and JPEG files are processing and storing in the Anafi’s big brain... at least I feel an improvement ! Not sure if it is a feeling or real, but next time I’ll measure time for the 14 shots and the ‘back to live view’...