Having many Spaces / Folders / Lists opens the requirement for a bulk editing tool to configure the options for each type (3-dot menu) in bulk for multiple.
I think a list with multiselect / bulk-edit of all spaces / folders /lists in the settings area > spaces would make sense. Also you shoulg get there when clicking "Spaces" on top of the Tasks sidebar.
You should be able to filter (e.g. by type) and select elements from the whole tree to run bulk operations on, most important:
  • Select Task Status list / inheritance
  • Set ClickApps
  • Set Default Settings for Views
  • Manage Automations
  • Set Owner
  • Set Sharing & Permissions (inkl. add / remove guests)
  • Set Color
  • Archive
  • Manage custom fields (if not or combine with central field manager)
  • Manage tags
  • Reorder Folders & Lists
  • Add view
  • Add List
  • Add folder (on space)
Currently you have to do this manually on every list in every folder in every space... "nice" work for hours ;)