todo when bump minimum Python version to 3.11

[maread99]

• Try losing remaining from __future__ import annotations lines (if can't lose these lines for any reason then move this point forward for review when bump to 3.12). Currently required in order to:
  • use typing.TYPE_CHECKER to avoid type annotations causing circular imports.
  • use | in a typed return.
  • use classes defined in a module as type annotations elsewhere within that same module.