Bastien <bzg@altern.org> writes:
> PS: To make things clear: I'm confident the patch is good, but I will
> put it higher on my patch review process if I know the agenda does not
> slow down :)

Here is the patch.  Now one just needs

    ;; Local Variables:
    ;; eval: (orgstruct-mode 1)
    ;; orgstruct-heading-prefix-regexp: ";;; "
    ;; End:

It cannot get any easier than this.

    2013-01-31  Christopher Schmidt  <christopher@ch.ristopher.com>

            * org.el (org-cycle-global-status, org-cycle-subtree-status): Set
            state property.
            (org-heading-components): Use org-heading-regexp in
            orgstruct-mode.
            (orgstruct-heading-prefix-regexp, orgstruct-setup-hook): New
            options.
            (orgstruct-initialized): New variable.
            (orgstruct-mode): Simplify implementation.
            (orgstruct-setup): Simplify implementation.  Translate keys to
            their most general equivalent.
            (orgstruct-make-binding): Generate index on the fly.  Discard
            alternative keys.  Bind variables according to
            orgstruct-heading-prefix-regexp.
            (org-get-local-variables): Honour state property.
            (org-run-like-in-org-mode): Do not override variables with
            non-default values.
            (org-forward-heading-same-level): Do not skip to headlines on
            another level.  Handle negative prefix argument correctly.
            (org-backward-heading-same-level): Use
            org-forward-heading-same-level.