Anchoring inked annotations to a note container (containing picture or text) would be really useful to annotate typed text (or a scanned document), or add arrows or sketch on top of a picture.
So far, “grouping” objects of different nature (ink + typed text or inserted content) is deemed impossible, but is it really ?
This is a work in progress : I still have to figure out how to achieve that purposedly. So far, it only happen by coincidence !
There are 10 “ideas” in the UserVoice forum, related to this feature, with a total of more than 700 votes : if you would like to see this feature implemented in OneNote, please vote for it !