Would recommend to vote to push it up the agenda. Voting will mean you will be notified if it gets picked up
This is one of the reasons a lot of organisations use OneNote to currently take their meeting notes as they can be shared. You can also search for the Meeting Notes v2.0 Power App online as this also has the functionality
Meeting notes in general are hard to find, hard to use, and a little wonky. There are some sort of sections that get locked and unlocked, so you can sort of co-edit but not smoothly. No one in our company uses them as the information just gets lost.
