Remember that the business case for the B787 was predicated on an increase in "point-to-point" journeys as compared to the traditional "hub-and-spoke" system. As such, it does not - at least initially - require ETOPS certification as it can fulfil that business case via intra-continental routes.
Boeing have 800 orders to fill for a 330-minute ETOPS certified aircraft. A 787 without ETOPS is still grounded. Would Boeing even be able to deliver them?