Improve location hierarchy management

Changed

Context

  • Difficult to add a child location in the right place.
    • Add child term button on detail page.
    • Added experimental views add button.
    • Only Enhanced Taxonomy Manager has a way to add a child term, but not to top level terms (bug).
    • Improve parent selection widget.
      • Looks like a core issue is preventing selection of any hierarchy ref widgets.
Taxonomy parent terms default reference widget

Discovery

Investigate taxonomy hierarchy modules

Analysis

Taxonomy Entity allows setting a vocabulary's hierarchy settings.
Otherwise, it will determine the hierarchy type dynamically.
Only 3 users, and several issues. But has potential for what I'm looking for.
I can set the taxonomy to be a single parent hierarchy, and it will have a select widget for a single parent.