Something simple that you can, after writing a note, put a checkmark or something that you can't move it unless you uncheck it and/or have their positions locked after a set time (1 week?).

Probably a bit niche but it get tiring checking about new notes only to see that some nervous fingers while trying to show the notes slip and move the squares of it, updating their coordinates lol.

This would be very helpful! When I'm translating, I try and check which posts have had their notes updated so I can make sure nothing has been deleted or vandalized. A function like this would make it so that I wouldn't have to see posts that only had the note positions moved. I'd be able to check more posts in a shorter amount of time.