I have a transpacific flight from TYO to ORD in August and upgraded my seat to United Polaris (Business) Class using points and cash. However, with only about 10% of Polaris seating reserved so far on my flight (and probably not likely to increase much), I'm wondering if I'd have a good chance of getting upgraded to Polaris as a UA Premier Gold from Economy Plus instead and save the cash since the Polaris is not a fully functioning product at the moment. With Polaris Class mostly empty, is UA upgrading its Premier members to fill all those empty seats? Does anyone think I'd have a good chance to snag an upgrade?