Hello Figma Team! it’s really good idea if the annotation in dev mode can be move not only in right side off the screen. it will help our as a designer to annotated more note in different position 
my this help designer in world wide not only me hahaha 
Hello there – welcome to the community, and thanks for your feedback on the annotation in Dev Mode. Don’t forget to vote up top! 
Our teams use votes from the community to gauge overall interest and prioritize.