Totally agree that mind maps are hard to scale out, either across time or people. This is why Dendron focuses on helping folks create consistent structures (we call them schemas) to help map out their knowledge base. Think of it as a type system for organizing your notes. More details on that here (https://nesslabs.com/dendron-featured-tool) if curious
I propose a Dendron Browser Plugin with same annotation functionality (FTW) =D
It would help with IP (Input + Process) components for those who adhere to the "Modern" Zettlekasten's IPA framework [1] (Input + Process + Action) conceptualized and presented by Marc Koenig.
